What did Monell v. City of New York establish?

• A. Local governments can be sued under §1983.
• B. Police officers can never be sued personally under §1983.
• C. The federal government cannot be sued under §1983.
• D. The statute requires class actions for civil rights claims.

Answer: (A)

Monell v. City of New York establishes that local governments can be sued under 42 U.S.C. § 1983 when a constitutional violation is caused by an official policy or a custom of the municipality. The important part is that liability attaches to the city or department itself, not just to the actions of a single officer. There must be an official policy or a widespread, persistent practice that the municipality knew about or should have known about and failed to correct, which directly caused the violation. This means a city can be held responsible for harms that stem from its own rules, training practices, or customs, rather than simply for the separate actions of its employees under a general rule of vicarious liability.

In practice, this distinguishes between cases where an individual officer acts unlawfully within the scope of a policy from those where the city itself has endorsed, tolerated, or failed to prevent a pattern of unconstitutional conduct. If the violation arises from a one-off act with no municipal policy or custom, Monell’s framework for municipal liability typically does not apply. At the same time, this doesn’t bar individual officers from being sued personally for their own unconstitutional actions.

The other statements don’t capture what Monell established: it’s not about immunizing police from personal liability, it isn’t about suing the federal government under § 1983, and it isn’t about class-action requirements. Monell specifically clarifies municipal liability under § 1983 through official policy or custom.