What Is the Act of 1871? Section 1983, Color of Law, Immunity

The Civil Rights Act of 1871 is a Reconstruction-era federal law, now codified at 42 U.S.C. § 1983, that lets you sue state and local government officials in federal court when they violate your constitutional rights.¹ Originally passed as the Ku Klux Klan Act, its most important surviving provision is the one that today drives most civil rights litigation against police officers, corrections staff, and other government actors.

Why Congress Passed It

Congress enacted the law during Reconstruction to combat Ku Klux Klan violence targeting Black citizens who exercised their newly recognized rights to vote, serve on juries, and hold public office.² It was the third in a series of Enforcement Acts, and it gave the federal government power to intervene when state and local governments failed to protect their residents.³

For nearly a century the law sat mostly unused. That changed in 1961, when the Supreme Court held in Monroe v. Pape that Section 1983 provides a federal remedy even when the official’s conduct also violates state law.⁴ Since then, Section 1983 has become one of the most frequently filed types of federal civil litigation.

What Section 1983 Actually Does

Section 1983 does not create new rights. It creates a way to enforce rights that already exist under the U.S. Constitution and federal law.¹ To bring a valid claim, you have to point to a specific constitutional provision the defendant violated. The most commonly invoked amendments are:

The Fourth Amendment, which protects against unreasonable searches and seizures. This is the basis for most excessive-force and unlawful-arrest claims.
The First Amendment, which covers retaliation for speech, protest, or religious exercise.
The Eighth Amendment, which prohibits cruel and unusual punishment. Incarcerated people use it to challenge inadequate medical care, dangerous conditions, or abuse by staff.
The Fourteenth Amendment, which guarantees due process and equal protection. Substantive due process claims apply when government conduct is so extreme it “shocks the conscience,” a standard the Supreme Court set in County of Sacramento v. Lewis. Procedural claims arise when the government takes a protected interest, like a job or property, without adequate notice or a hearing.

A complaint that only alleges unfair treatment, without tying the facts to a specific constitutional right, will not survive.

Who Can Sue and Who Can Be Sued

The statute protects “any citizen of the United States or other person within the jurisdiction thereof.”¹ U.S. citizens, lawful permanent residents, undocumented immigrants, and incarcerated people all have standing. Prisoners are among the most frequent filers, though they face extra procedural rules covered below.

On the other side, Section 1983 targets “persons” acting under state authority. That covers individual state and local officials, such as police officers, corrections officers, school administrators, and social workers, sued in their personal capacity for their own actions.

Municipal Liability

Cities and counties can also be sued, but not simply because they employ someone who violated your rights. In Monell v. Department of Social Services, the Supreme Court held that a municipality is liable only when the violation resulted from an official policy, a widespread practice, or a deliberate decision by someone with final policymaking authority.⁵ You must show the local government’s own policy or custom was the driving force behind the violation.⁶ Isolated incidents are not enough to establish a custom.

Supervisory Liability

Supervisors like police chiefs and wardens are not automatically liable for what their subordinates do. Section 1983 has no respondeat superior.⁷ A supervisor is liable only if they personally participated, directed the conduct, or knew about ongoing violations and failed to act.

Who Is Off Limits

States and state agencies are generally shielded by the Eleventh Amendment.⁸ Federal officials are also outside the statute because they do not act under state authority; a Bivens action is the federal counterpart, but the Supreme Court has sharply limited it in recent years. Private individuals and companies generally cannot be sued under Section 1983 either, though a private party can be reached when they conspire with a state actor or perform a function traditionally reserved for the government.

The Color of Law Requirement

You have to show the defendant was acting “under color of” state law when the violation happened. In practice, that means the person was using authority granted by a government position: enforcing a law, carrying out official duties, or exercising power that comes with the role.¹ An officer who exceeds their authority or violates department policy can still be acting under color of law if the badge, uniform, or position made the conduct possible. Purely private conduct, like an off-duty personal dispute unconnected to the job, does not count.

Immunity Defenses That Block Most Cases

Even after a plaintiff proves a constitutional violation, immunity defenses are the most common reason Section 1983 cases are dismissed before trial.

Qualified Immunity

Qualified immunity protects individual officials from personal liability unless their conduct violated a “clearly established” constitutional right.⁹ Courts apply a two-part test: was a constitutional right actually violated, and was that right clearly established at the time, meaning a reasonable official would have known the conduct was unlawful. Courts judge what was clearly established using the law in force on the day of the incident, not the day the case is filed.

The defense is powerful because it can end a case before discovery. It applies only to individual officials sued in their personal capacity, not to municipalities. In practice, courts often require a prior case with nearly identical facts before deeming a right clearly established.

Absolute Immunity

Some officials have even stronger protection. Absolute immunity completely bars Section 1983 damage claims for conduct within their designated roles:¹⁰

Judges, for judicial acts taken within the jurisdiction of their court, even if the ruling was wrong or made in bad faith. A judge loses this protection only when acting entirely outside a judicial role or in the clear absence of all jurisdiction.
Prosecutors, for actions closely tied to the judicial process, such as charging decisions, presenting evidence, and arguing in court. Investigative or administrative work may get only qualified immunity.
Legislators, for lawmaking activities, including votes and floor speeches.

You cannot recover money damages from these officials for protected conduct, no matter how clearly unconstitutional it was. Injunctive relief may still be available in some circumstances.

What You Can Recover

A successful Section 1983 plaintiff can recover several kinds of relief.

Compensatory damages for actual losses, including medical bills, lost wages, property damage, and pain and suffering. A constitutional violation without proof of injury does not support compensatory damages.⁷
Nominal damages, a small symbolic award (often one dollar) that a court must grant when you prove a violation but cannot prove a financial loss.
Punitive damages against individual officials, but not municipalities, when the conduct was malicious or showed reckless disregard for your rights.¹¹
Injunctive relief, a court order stopping the conduct or requiring specific corrective action. This is the usual remedy when the goal is a policy change rather than money.

Under 42 U.S.C. § 1988, a court may award reasonable attorney’s fees to the prevailing party.¹² Winning plaintiffs are routinely awarded fees, which makes it possible for attorneys to take these cases on contingency. A prevailing defendant can recover fees only if the court finds the suit was frivolous or brought in bad faith.

How Long You Have to File

Section 1983 has no filing deadline of its own. Federal courts borrow the personal-injury statute of limitations from the state where the violation occurred.⁷ In most states that period runs one to three years from the date of the incident, with two or three years being typical. The clock generally starts on the date you knew or should have known about the violation. Miss the window and you lose the right to sue, no matter how strong the underlying claim.

Extra Rules for Incarcerated Plaintiffs

Prisoners can file Section 1983 claims, but the Prison Litigation Reform Act (PLRA) adds requirements. Before filing suit, a prisoner must use every available grievance procedure at the facility and pursue all internal appeals to completion.¹³ Skipping a step, or missing a grievance deadline, can get the federal case dismissed. Exhaustion is required even when the grievance system cannot award money.

The PLRA also bars a prisoner from recovering damages for purely mental or emotional injury unless they show a prior physical injury or the commission of a sexual act.¹³ The physical injury has to be more than trivial, though it does not have to be severe. Nominal damages and injunctive relief remain available.

How to File in Federal Court

Section 1983 claims are filed in the U.S. District Court for the district where the violation happened. If you are representing yourself, that court’s website will have a complaint form, a civil cover sheet, and instructions for self-represented litigants.

Filing a new civil action costs $405, which includes a $350 statutory filing fee and a $55 administrative fee. If you cannot afford it, you can apply to proceed in forma pauperis under 28 U.S.C. § 1915.¹⁴ The application requires a sworn statement of inability to pay and, for prisoners, a certified copy of the trust-fund account statement covering the prior six months. A prisoner whose IFP application is approved still owes the full fee, paid in installments deducted from the prison account.

Your complaint has to explain how each named defendant was personally involved in the constitutional violation, and it should state clearly what relief you want: damages, a declaratory judgment, injunctive relief, or some combination. After the court accepts the filing and issues a signed summons for each defendant, you are responsible for service of process. Any person who is at least 18 and not a party can serve the papers.¹⁵ Service must be completed within 90 days of filing; miss that and the court can dismiss the case without prejudice, though refiling may run into the statute of limitations. State notice-of-claim rules that some states impose before suing a government entity do not apply to federal Section 1983 claims, though they may still apply to any state-law claims you include in the same lawsuit.

1
Office of the Law Revision Counsel. 42 USC 1983 – Civil Action for Deprivation of Rights
2
U.S. Senate. The Enforcement Acts of 1870 and 1871
3
Federal Judicial Center. Civil Rights Act of 1871
4
Cornell Law School. Monroe v. Pape
5
Justia. Monell v. Department of Social Services
6
Ninth Circuit District and Bankruptcy Courts. 9.5 Section 1983 Claim Against Local Governing Body Defendants
7
Court of Appeals for the Ninth Circuit. Section 1983 Outline
8
Cornell Law School. Exceptions to Eleventh Amendment Immunity – Abrogation
9
Legal Information Institute. Qualified Immunity
10
Court of Appeals for the Ninth Circuit. Section 1983 Outline
11
Ninth Circuit District and Bankruptcy Courts. 5.5 Punitive Damages – Model Jury Instructions
12
Office of the Law Revision Counsel. 42 USC 1988 – Proceedings in Vindication of Civil Rights
13
Office of the Law Revision Counsel. 42 USC 1997e – Suits by Prisoners
14
Office of the Law Revision Counsel. 28 USC 1915 – Proceedings In Forma Pauperis
15
Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons