An opportunity to target a gunman who ended up killing 21 people at a Texas school was reportedly passed up by police concerned at children in the line of fire.
A 70-year-old man has shot and killed three elderly people with a handgun during a dinner at an Alabama church where he occasionally attended services, police say.
Americans have been urged to stand up to the gun lobby, as a visibly shaken Joe Biden addressed the nation after a gunman killed 21 at a Texas primary school.
A white teenager who killed 10 people in a racist attack at a western New York grocery store in a black neighbourhood had been taken into custody last year and given a mental health evaluation after making a threat at his high school, authorities say.
An 18-year-old gunman has fatally shot 10 people and wounded three others at a grocery store in a black neighbourhood of Buffalo, New York, before surrendering.
Three people in the Swedish city of Norrkoping needed medical attention after being hit by police bullets during clashes between police and protesters following Koran burnings that caused riots in several Swedish towns over the Easter weekend.
Ten people have been shot and two others injured in a shooting at a shopping mall in South Carolina's capital that authorities do not believe was a random attack.
