A bank employee armed with a rifle has shot dead four colleagues and wounded nine other people at his workplace while livestreaming the attack in downtown Louisville, Kentucky.
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.
Tens of thousands of people have gathered in Washington and at rallies across the US to call for laws limiting gun ownership after recent mass shootings.
The United States should make it easier to confine "deranged" people and eliminate gun-free school zones after a gunman killed 19 children and two teachers this week at a Texas school, former president Donald Trump says.
A mass shooting at a primary school in the US state of Texas has left at least 18 children and three adults dead, with the teenage suspect also losing his life.
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.
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.
A teenager has been charged over the fatal shooting of a 16-year-old girl who was walking home from school when she was hit by a stray bullet during a street dispute in New York City.
