Where did they get the guns?

Colorado has a long history of mass shootings and other public acts of gun violence, stretching from Columbine High School in 1999 to the Boulder King Soopers shooting last month.

This map shows the locations of some of the most prominent incidents and — where public data exists — the locations of where the firearms were purchased. Click the icons to see more data.

HOW TO READ THIS MAP ▶︎

      = site of shooting

      = site of weapon purchase

          = Connects related sites

Click icons for more information