Mar 10, 2014 — In his first extensive comments about what his son did, Peter Lanza tells The New Yorker that "you can't get any more evil." Adam Lanza killed 20 children and six educators at a Connecticut school.
Jan 14, 2014 — Witnesses say one man was upset by another's texting during the previews at an afternoon screening of Lone Survivor in a Tampa-area theater. The dispute allegedly ended with the man who had been texting being shot and killed. The suspect has been charged with second-degree murder.
Nov 5, 2013 — More information is coming in about what happened at Los Angeles International Airport and the young man suspected of killing at TSA officer and wounding several other people. Early headlines about warnings concerning Paul Ciancia's mental state and efforts to find him appear to have been wrong.
Nov 4, 2013 — Witnesses said they heard what sounded like gunshots inside the Westfield Garden State Plaza Mall around 9:30 p.m. ET Monday. Hundreds of police officers responded as shoppers and mall employees took shelter. Around 3:20 a.m. ET Tuesday, the suspected gunman's body was found. No one was injured.
Feb 19, 2013 — Authorities say the deadly shooting spree began at a home, where one woman was found dead. The gunman was then involved in at least three carjackings — killing two more people in the process — before taking his own life.
Feb 11, 2013 — The incident happened as Vice President Biden came to neighboring Philadelphia for a roundtable on gun violence.
Jan 31, 2013 — Fifteen-year-old Hadiya Pendleton was shot and killed less than a mile from President Obama's home in Chicago. A week before, she and others in her school's band had been in Washington during the inaugural festivities. Now, her death is part of the discussion about gun laws.
Dec 26, 2012 — "I still have to get ready to see how much of the neighborhood I can burn down and do what I like doing best: killing people," William Spenger wrote, according to police. He set a fire at his Webster, N.Y., home, then shot at the first responders. Authorities think Spengler also killed his sister.
Dec 12, 2012 — An estimated 10,000 people were in the Clackamas Town Center mall when a gunman opened fire. Shoppers, store employees and the mall's Santa scattered. When the attack was over, two people and the gunman were dead. He's been identified as a 22-year-old Portland man.
Sep 28, 2012 — Four other people were wounded. Early reports indicate the gunman was a former employee. People who live near the business are in shock.