The New Orleans Police Department (NOPD) has primary responsibility for law enforcement in New Orleans, Louisiana. The department's jurisdiction covers all of Orleans Parish, while the city is divided into eight police districts.

The Battle of Liberty Place, or Battle of Canal Street, was an attempted insurrection and coup d'etat by the Crescent City White League against the Reconstruction Era Louisiana Republican state government on September 14, 1874, in New Orleans, which was the capital of Louisiana at the time. Five thousand members of the White League, a paramilitary terrorist organization made up largely of Confederate veterans, fought against the outnumbered New Orleans Metropolitan Police and state militia. The insurgents held the statehouse, armory, and downtown for three days, retreating before arrival of federal troops that restored the elected government. At least 32 people, including at least 21 members of the White League, were killed in the fighting. No insurgents were charged in the action.