The film was initially released amid the backlash against violence in films and video games aimed at children that followed the Columbine High School massacre , in which Eric Harris and Dylan Klebold killed 12 students and one teacher before committing suicide on April 20 , 1999 . As a result , the film was substantially re-edited shortly before release on December 12 , 2000 , to reduce the violence . The original unedited version was eventually released as " The Original Uncut Version " on April 23 , 2002
Columbine High School massacre
Columbine High School massacre
Batman Beyond: Return of the Joker