The African-American youth was killed last year in August but none of the officers involved have been punished. Authorities in Aurora in the US state of Colorado are looking at ways of launching an inquiry.
A police spokeswoman says that while there have been no credible threats in the Los Angeles area, "the department will maintain high visibility around movie theaters when (the film) opens" next week.
The much-hyped new Joaquin Phoenix film, billed as a "character study" of Batman's nemesis, has been hailed as an Oscar contender but has raised concerns that its depiction of mental illness and violence could prove incendiary.
Gunman shoots in industrial area on outskirts of Chicago, killing and wounding multiple people before he's slain, officials say.
The attacker's name is disclosed, but authorities will refrain from repeating it so as not to glorify him.
The armed uprising began on October 25, 1917 – which according to the modern-day Gregorian calendar is November 7 – after a shot was fired at the Winter Palace by the Aurora cruiser ship.
A gunman shooting from a hotel in Las Vegas Strip has killed at least 50 people, making the shooting the deadliest in American history.
Sweden takes another step towards NATO with a joint war game, aiming to work together in the event of an armed conflict in the future.
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