Warner Bros. is pulling the trailer for its upcoming release Gangster Squad from theaters following today's shooting massacre in Colorado because the trailer features a sequence where gunmen open fire in a movie theater, killing audience members.
The trailer is playing before some prints of The Dark Knight Rises, another Warners movie and the film playing when the massacre occurred.
"A spokeswoman for Warner Bros. could not say whether the trailer will be re-cut to eliminate the offending footage," according to TheWrap. "Though the trailer had run prior to screenings of The Dark Knight Rises, it did not play before the Aurora screening."

The trailer remained widely available online at time of publish.
Gangster Squad is slated for release September 7, but it remains to be seen whether that will now be changed in light of today's tragedy.
Source : ign[dot]com