18 USC 231 Civil Disorders: Charges, Penalties & Defenses

Under 18 U.S.C. 231, the federal civil disorders statute, it is a felony punishable by up to five years in prison and a fine of up to $250,000 to interfere with law enforcement or firefighters during a civil disorder, to teach someone how to make or use a weapon for use in such a disorder, or to transport or manufacture weapons intended for that purpose. The law reaches further than most people expect. You do not have to throw a punch, break a window, or cross a state line to be charged. If a disturbance touched interstate commerce or a federal function and you did something that got in the way of officers responding to it, you are within the statute’s reach.

What Counts as a Civil Disorder

The definitions that gate this statute live in 18 U.S.C. 232, and they are broader than the everyday meaning of the words.

A “civil disorder” is a public disturbance involving acts of violence by three or more people that causes an immediate danger of, or actually results in, damage or injury to another person or their property.¹ Three people is a low bar. A scuffle at the edge of an otherwise peaceful demonstration can qualify if it creates immediate danger, and the rest of the crowd does not have to be involved for the definition to trip.

“Law enforcement officer” is not limited to police. It covers federal, state, and local officers, and it also includes National Guard members, state militia, and members of the Armed Forces when they are engaged in restoring order during a civil disorder.² Interfering with any of them can trigger the statute.

A “federally protected function” is any operation carried out by a federal department, agency, or employee under federal law, including the collection and delivery of U.S. mail.² That definition is why blocking a federal courthouse, disrupting mail delivery, or impeding federal workers can create federal jurisdiction all on its own.

The Three Ways You Can Be Charged

The statute reaches three separate categories of conduct. Each carries the same five-year maximum, but the proof looks different for each.

Obstructing officers or firefighters (subsection (a)(3)). Any act, or attempted act, that obstructs, impedes, or interferes with a law enforcement officer or firefighter carrying out official duties during a civil disorder that affects commerce or a federal function.³ This is the broadest of the three and by far the most commonly charged. You do not need to have committed violence yourself. Building a barricade, helping someone evade arrest, coordinating resistance to a police line, or passing gear to others can all be enough.

Transporting or manufacturing weapons (subsection (a)(2)). Moving or producing any firearm, explosive, or incendiary device across state lines while knowing or intending it will be used unlawfully during a civil disorder.³

Teaching or demonstrating weapons techniques (subsection (a)(1)). Showing another person how to make or use a firearm, explosive, or incendiary device knowing or intending it will be used to further a civil disorder that affects commerce or a federal function.³

Subsections (a)(1) and (a)(2) require the government to prove knowledge or intent about how the weapons or instruction would be used, and that mental-state element is harder to establish. That is one reason (a)(3) carries most of these prosecutions.

What the Government Has to Prove

For the obstruction charge under subsection (a)(3), federal prosecutors have to establish four things beyond a reasonable doubt:

A civil disorder occurred — three or more people were involved in a public disturbance that included violence and created immediate danger of injury or damage.
The defendant committed or attempted an act that obstructed, impeded, or interfered with a law enforcement officer or firefighter performing official duties during that disorder.
The officers or firefighters were lawfully engaged in the lawful performance of their duties.
The disorder affected interstate commerce, the movement of goods, or a federally protected function.³

The government builds these cases with surveillance footage, body-camera video, social media posts, cell phone location data, and testimony from officers on the scene. Personal violence by the defendant is not required. The question is whether the defendant did something deliberate that got in the officer’s way.

For the weapons and instruction subsections, the government has to prove the additional knowledge or intent element — that the defendant knew or intended the weapons or techniques would be used unlawfully during a civil disorder.

When Federal Jurisdiction Attaches

Federal prosecutors can only charge 18 U.S.C. 231 if the civil disorder touched interstate commerce, disrupted the movement of goods in commerce, or interfered with a federally protected function.³ Courts read this hook broadly. Blocking a highway used for interstate travel, disrupting a business that ships goods across state lines, or interfering with cell towers and communication networks can all satisfy it.

Federal courts recognize three types of activity as satisfying the commerce power: disrupting the routes people and goods travel (highways, railroads, waterways), interfering with things moving in interstate commerce (vehicles, shipments), and affecting activities with a substantial connection to interstate commerce (businesses, communications infrastructure). A seemingly local disturbance can still be federalized if it touches any of these channels, which gives prosecutors significant flexibility to move a case into federal court.

Penalties

Each of the three subsections carries the same statutory ceiling: up to five years in federal prison, a fine of up to $250,000, or both.³⁴ The offense is a Class D felony.⁵

Federal parole was abolished for offenses committed after November 1, 1987, so a prison term is served without traditional parole. Instead, a judge can impose up to three years of supervised release after prison for a Class D felony.⁶ During that period you have to avoid new criminal conduct, submit to drug testing, cooperate with DNA collection, and comply with any restitution order. The court can also restrict travel, impose curfews, or require regular check-ins with a probation officer.

Courts may order restitution covering each victim’s full losses, including property damage and medical costs.⁷ Restitution orders are enforceable as liens against your property and can outlive the sentence.

How the Sentencing Guidelines Apply

The U.S. Sentencing Commission has not written a guideline specifically for 18 U.S.C. 231, so courts use the most analogous one. Federal courts have consistently used U.S.S.G. Section 2A2.4, the guideline for obstructing or impeding officers.⁸

The base offense level under that guideline is 10. It goes up 3 levels if the offense involved physical contact or the defendant possessed a dangerous weapon and threatened its use, and up another 2 if the victim sustained bodily injury.⁸ In one federal appellate case, applying this guideline moved the recommended range from 6–12 months up to 18–24 months. The guidelines are advisory, but judges start with them in almost every federal sentencing.

How This Differs From the Anti-Riot Act

People routinely confuse 18 U.S.C. 231 with the Anti-Riot Act, 18 U.S.C. 2101. Both are used in riot-related prosecutions, and both carry the same five-year maximum, but they hook federal jurisdiction differently.⁹

Under the Anti-Riot Act, the defendant must have personally traveled across state lines or used an interstate communication facility (phone, internet, mail) with the specific intent to incite, organize, encourage, or participate in a riot, and must have committed or attempted an overt act toward that purpose. The Anti-Riot Act also explicitly exempts people traveling for legitimate organized labor objectives through lawful means.

Section 231 does not require the defendant to have traveled or used any interstate facility. It requires that the disorder itself affected interstate commerce or a federal function. The focus is on what the disturbance disrupted, not on how the defendant got there, which makes it easier to charge someone who joined a local disturbance without ever leaving the state.

Defenses That Actually Work

First Amendment Protection

Attending a protest, chanting slogans, carrying signs, and recording officers in public are protected activities. Mere presence at a demonstration where others turned violent is not a crime.

The harder line is between protected advocacy and unprotected incitement. Under Brandenburg v. Ohio, speech advocating illegal action can only be punished if it is both directed at producing imminent lawless action and likely to actually produce it. Vague calls for resistance or general expressions of anger at law enforcement fall short of that standard. Directing a crowd to charge a police line or throw objects at officers almost certainly meets it. Courts look at the specific words, the context, and whether violence actually followed.

Lack of Intent

The government has to show that the defendant willfully acted to interfere. If you were caught up in a crowd and unintentionally blocked an officer’s path, or you were trying to leave the area, prosecutors may not be able to prove the required mental state. The fight in these cases is usually about the difference between deliberate obstruction and incidental presence, and video from multiple angles is often decisive.

Mistaken Identity

Disorder scenes are chaotic. People in similar clothing, masks, or protective gear can be hard to tell apart on surveillance footage. Defense counsel routinely challenges identifications from grainy video, distant photos, or social media images with obscured faces. When the government relies on cell phone location data instead of direct identification, presence in a broad area does not prove participation in any specific act.

Entrapment

Where undercover agents or informants steered the events leading to the charge, entrapment may be available. It requires two things: government inducement and a defendant who was not predisposed to commit the crime. Mere opportunity is not inducement. The government crosses the line when its agents apply persistent pressure, appeal to sympathy or friendship, or make extraordinary promises that would overcome a law-abiding person’s resistance.¹⁰ Predisposition is the harder element. Courts often treat a quick, eager acceptance of an agent’s suggestion as evidence of predisposition even without prior criminal history.

Officers Were Not Lawfully Performing Their Duties

The statute requires officers or firefighters to be “lawfully engaged in the lawful performance” of their duties.³ If officers were acting outside their authority, using excessive force, or violating constitutional rights at the moment of the alleged interference, that element can fail. It is a narrow challenge, but body-camera footage that contradicts the official account can support it.

Life After a Conviction

A federal felony under this statute follows you well past the sentence itself.

Federal law bars anyone convicted of a crime punishable by more than one year in prison from possessing firearms.¹¹ Because 18 U.S.C. 231 carries a five-year maximum, a conviction triggers a lifetime firearms ban unless you receive a presidential pardon or have your civil rights restored under the relevant jurisdiction’s law.

For non-citizens, the exposure is worse. A conviction classified as an aggravated felony makes a non-citizen deportable, and it can also bar naturalization by defeating the “good moral character” requirement in immigration law.¹² Even where deportation does not follow automatically, immigration officers and judges will scrutinize the record in any future application.

Background checks routinely surface federal convictions, and many employers and landlords treat them as disqualifying. Professional licenses in law, medicine, education, and finance can be revoked or denied. Voting rights depend on the state — some restore them at release, others require completion of the full sentence including supervised release — so you have to check the rules where you live.

Prosecutors have five years from the date of the offense to bring charges, the standard federal limitations period under 18 U.S.C. 3282. That is a long window in which digital evidence can be gathered and reviewed, so time alone is not protection.

If You’re Under Investigation or Charged

Get a federal criminal defense attorney involved as early as possible. Federal cases move faster than state cases, and the earliest decisions — whether to speak with agents, how to handle the initial appearance and any detention hearing, whether to cooperate — shape everything after. Anything you say to federal agents can be used against you, including statements you think help your case.

Prosecutors often stack additional charges on top of the civil disorder count: conspiracy, firearms offenses, destruction of government property. Each one increases the sentencing exposure and the leverage the government has in plea negotiations. A lawyer who works in federal court can test whether the evidence actually satisfies every element the statute requires, push back on digital and identification evidence, and try to resolve the case before an indictment locks positions in.

1
Office of the Law Revision Counsel. 18 USC Chapter 12 – Civil Disorders
2
Office of the Law Revision Counsel. 18 USC 232 – Definitions
3
Office of the Law Revision Counsel. 18 USC 231 – Civil Disorders
4
Office of the Law Revision Counsel. 18 USC 3571 – Sentence of Fine
5
Office of the Law Revision Counsel. 18 USC 3559 – Sentencing Classification of Offenses
6
Office of the Law Revision Counsel. 18 USC 3583 – Inclusion of a Term of Supervised Release After Imprisonment
7
Office of the Law Revision Counsel. 18 USC 3664 – Procedure for Issuance and Enforcement of Order of Restitution
8
United States Sentencing Commission. 2025 Guidelines Manual – Chapter 2
9
Office of the Law Revision Counsel. 18 USC 2101 – Riots
10
United States Department of Justice. Criminal Resource Manual 645 – Entrapment Elements
11
Bureau of Alcohol, Tobacco, Firearms and Explosives. Most Frequently Asked Firearms Questions and Answers
12
U.S. Citizenship and Immigration Services. Chapter 2 – Adjudicative Factors