A Colorado community will mark the 20th anniversary of the attack on Columbine High School on Saturday with community service projects and a ceremony remembering the 13 people killed by teenage gunmen.
Source: ABC News 6
A Colorado community will mark the 20th anniversary of the attack on Columbine High School on Saturday with community service projects and a ceremony remembering the 13 people killed by teenage gunmen.
Source: ABC News 6