Columbine High School Massacre: 14 Killed, 23 Injured, April 20, 1999
Columbine High School massacre: Eric Harris and Dylan Klebold kill 14 people and injure 23 others before committing suicide at Columbine High School in Columbine, Colorado. Date: April 20, 1999 Read more on Wikipedia β π Other events on April 20 π Events on this day in 1999 π On This Day (Today)