Joker' Puts Law Enforcement on Alert

The LAPD plans to increase its visibility at theaters when "Joker" opens, amid law enforcement concern about the Warner Bros. film.

Security stepped up as 'Joker' opens in U.S. movie theaters

Joker' Threat Worries Will See NYPD Undercover In Big Apple

Joker' impersonator, who talked about killing people on Facebook

Jim Gordon (character) - Wikipedia

Pilsen man admits he set fire to a CPD vehicle while wearing Joker

SPD K9 outfitted with new body armor for when things get 'ruff

Shooting for 'Joker: Folie a Deux' starring Joaquin Phoenix, Lady

Fortnite Joker Gas Canisters Locations: Where to find and diffuse

Joker' arrested after pointing gun at passing vehicles, police say