Hochhalter chose to forgive the mother of one of the gunmen, writing in a 2016 letter to Sue Klebold: "'A good friend once told me, 'Bitterness is like swallowing a poison pill and expecting the other ...

Here is some background information about the deaths of 13 people at Columbine High School in Littleton, Colorado, on April 20, 1999. Facts Twelve students and one teacher were killed by students ...