When does this epidemic of violence going to end?

Arapahoe County Sheriff Grayson Robinson (click here) holds a picture of Claire Davis, 17, at a briefing at Arapahoe High School in Centennial, Colo., the day after the Dec. 13 shooting. Davis died Saturday.

Claire Davis, (click here) who loved riding horses and doing well in school. Her friends say she was always happy and always offered a shoulder to cry on.

Is this the way the holidays are going to be from now on? Celebratory killings by disturbed young people allowed to carry military weapons? Is It? Is this the legacy of The Second Amendment to the USA Constitution?