Read CNN’s Fast Facts about mass shootings in the United States.

Federal prosecutors and investigators announced charges of murder and attempted murder against dozens of alleged Trinitarios gang leaders, members and associates in Massachusetts. The allegations are ...

There are many types of murder including single death, serial and mass. Single death homicides are, as the name implies, a one time event. Serial murder is one victim at a time repeated over and over, ...

The shooting in Shreveport, Louisiana, on Sunday that left eight children dead and two adults injured was the 115th mass shooting in the U.S. so far this year. It is also the deadliest mass shooting ...

Fifty years after the worst mass murder in Bucks County history, the last surviving Abt family member talks about the crime and what happened after.