FBI background check blocked gun sale to St. Louis shooter
In Chicago, handguns turned into high-capacity machine guns fuel deadly violence
St. Louis school shooter had his rifle taken away from him days before attack, officials say
School gunman had AR-15-style weapon, 600 rounds of ammo
At least two dead in shooting at Central Visual Performing Arts High School in south St. Louis
Police: 3 killed in shooting at St. Louis high school
Police: North Carolina rampage began when teen shot brother
UA Professor shot and killed on campus
What we know about the victims of the alleged Stockton serial killer
Suspect in Raleigh shooting is 15 years old and in critical condition, police say
2 people dead, 6 wounded in stabbing attacks on Las Vegas Strip, police say
A kidnapped baby, parents and uncle are found dead in California
More than 30, mostly children, dead in a mass shooting at a Thai child care center