Batman Colorado shooting: gun ban 'would not have stopped Aurora cinema massacre' John Hickenlooper, a Democrat, said he believed suspect James Holmes, who was armed with four weapons and 6,000 bullets, would have found "something else" to use. This wasn't a Colorado problem. This is a human problem. Even if he didn't have access to guns, this guy was diabolical, he would have found explosives. He would have found something, he would have done something to create this horror. The Governor said his administration "will try to create some checks and balances on these things, but it is an act of evil. If it was not one weapon, it would have been another. Meanwhile, The Hollywood studio behind "The Dark Knight Rises" cancelled red carpet events around the world and said it would withhold box office figures for the film's opening weekend. Warner Brothers shelved high profile premiere events with the cast in Japan and Mexico after earlier stopping one in Paris. The film is set to make an estimated $160 million over the weekend, placing it as one of the top three openings in cinema history alongside "The Avengers" and the final Harry Potter film. A studio spokeman said: "Out of respect for the victims and their families Warner Bros. Pictures will not be reporting box office numbers." The move was swiftly followed by major Hollywood rivals including Disney, Fox, Sony, Lionsgate and Universal, who said they would not publish takings for their films. Warner Brothers executives also scrambled to pull a trailer for another film which included a scene of mobsters shooting at theatre audiences. They cut a trailer for "Gangster Squad," a 1940s-set movie starring Sean Penn, because of a scene eerily similar to the Colorado massacre. The trailer had been running before "The Dark Knight Rises" in some cinemas but not in the cinema where the massacre happened.