Authorities say a gunman who killed nine of his co-workers at a California rail yard had stockpiled weapons and 25,000 rounds of ammunition at his house before setting it on fire.
There are many reasons throughout history for why people commit mass murder of there fellow man.
A more recent discovery by a research team, which includes two University of Wyoming faculty members, reveals the oldest documented site of an indiscriminate mass killing 6,200 years ago in what is now Potočani, Croatia...
The Cheyenne LGBT community along with friends and allies will gather at the Cheyenne Depot Plaza at 7 p.m. tonight in support of those affected by the Orlando shooting.