Most US cinemas have banned masks, face paint and toy weapons after the 2012 mass shooting in Aurora, Colorado, which happened during a screening of another Batman flick, "The Dark Knight Rises." The gunman wore a Joker costume when he went on a gun and tear-gas rampage, killing 12 people and injuring 70 others. Body costumes that don't hide a person's identity, however, have been generally allowed in theaters.
多数美国院线已经禁止了观众佩戴面具、彩绘人脸或携带玩具武器，这是因为 2012 年另一部蝙蝠侠电影《黑暗骑士崛起》上映时，在科罗拉多奥罗拉市发生了重大枪击案。 当时枪手身穿小丑戏服，向观众开枪并投掷催泪弹，导致 12 人死亡，70 人受伤。但影院普遍还是允许观众穿着不隐藏个人身份的戏服进行观影的。