Monday, April 20
A gunman killed at least 16 people, including one Mountie, during a weekend shooting rampage in small-town Nova Scotia, the Royal Canadian Mounted Police said.
Tuesday, November 07
He beat his wife, cracked his toddler stepson’s skull and was kicked out of the military. He drove away friends, drew attention from the police and abused his dog. Before Devin P. Kelley entered a rural Texas church with a military-style rifle, killing at least 26 people on Sunday, he led a deeply troubled life in which few in his path escaped unscathed.
Monday, July 25
At least two people were killed and 14 to 16 wounded in a shooting at a nightclub in Fort Myers, Florida early on Monday, police said.
Saturday, July 23
A teenage gunman killed nine people in a shooting rampage at a shopping district in southern Germany -- before police found his body on a nearby street, authorities said.
Friday, July 08
Snipers operating from rooftops in Dallas killed five police officers and wounded six more in a coordinated attack during one of several protests across the country against the killing of two black men by police this week.
Monday, February 22
The man accused of killing six people and injuring two more in a Saturday evening shooting rampage in Kalamazoo, Michigan, was an Uber driver who picked up and dropped off passengers between shootings, a source with knowledge of the investigation told CNN.
Friday, October 02
Residents of a quiet Oregon town struggled to comprehend the carnage left by the latest U.S. mass shooting as investigators puzzled over what drove a young gunman to kill nine people in a college classroom before he died in an exchange of gunfire with police.
Thursday, August 27
A man who shot dead two journalists on live TV in the US state of Virginia apparently sent a rambling fax to ABC News describing himself as a "human powder keg" shortly after the attack.
Monday, May 18
Even before the deadly melee started, police were already in place, expecting a ruckus. What they saw was far more brutal than what they had anticipated.
Thursday, November 20
Three students were wounded in a library on the campus of Florida State University early Thursday by a gunman who was killed by campus police.