The Columbine High School massacre Killing was a school shooting Use_firearm and attempted bombing Attack that occurred Coming_to_be on April 20 , 1999 , at Columbine High School in Columbine , Colorado , United States .

The Columbine High School massacre Killing was a school shooting Use_firearm and attempted bombing Attack that occurred Coming_to_be on April 20 , 1999 , at Columbine High School in Columbine , Colorado , United States .

Near the tour 's end Process_end , the dates mainly consisted Cause_to_be_included of benefit and tribute shows including the Bridge School Benefit and a tribute show to longtime friend , Johnny Ramone .

The resulting shock wave from the blast Catastrophe damaged Damaging windows in nearby buildings including the National Theatre , Café Slavia , the Film and TV School of the Academy of Performing Arts in Prague ( FAMU ) , the Faculty of Social Sciences of Charles University and the Academy of Sciences of the Czech Republic .