Interactive: Find out more about mass killings in the U.S.

The man who killed 10 people at a Buffalo grocery store May 14 was removed from court Wednesday after a man lunged at him during the tense sentencing proceeding.

There are currently 46 states with some type of hate crime law on the books. But those laws differ, sometimes substantially, by state.

Ten years after the Sandy Hook Elementary School shooting, victims' families and survivors say grief and trauma remain but hope continues to grow. The shooting in Newtown, Connecticut, on Dec. 14, 2012, killed 20 first-graders and six educators. This year's anniversary has been more difficult for many.

The Virginia Office of the State Inspector General is investigating the state police hiring of a man who drove across the country, kidnapped a 15-year-old California girl and killed her mother and grandparents.

The suspect worked at one of the businesses where the shootings took place at a mushroom farm and a trucking firm near San Francisco.

A five-hour police delay in alerting the public that the California dance hall killer was on the run is throwing a spotlight on the nation's flawed, patchwork system for warnings of mass shooters at large.

California has some of the toughest gun laws in the country, with rules on everything from the types of weapons and ammunition that can be legally owned, to who can and can’t own a weapon.

A new report on mass attacks calls for communities to intervene early when they see warning signs of violence. The report also encourages businesses to consider workplace violence prevention plans and highlights the connection between domestic violence, misogyny and mass attacks.

As mass shootings are again drawing public attention, states across the U.S. seem to be deepening their political divide on gun policies.

Increasingly it feels like America is at war with itself. Simply keeping track of the shootings has become difficult, with locations and details and explanations running together into a blur of bloodshed and heartbreak.

The most expansive federal report in over two decades on guns and crime shows a shrinking turnaround between the time a gun was purchased and when it was recovered from a crime scene.

Cemeteries have long honored those who die too young. They are for stillborn children and those who died of disease or accidents. Today, a modern epidemic fills more graves than anything else: gun violence.

The high court's ruling that set new standards for evaluating gun laws left open many questions, experts say.

With the Islamic State group waning, the main threat in the near future likely will be white supremacist shooters, the report found.

A spate of threats and false reports of shooters have been pouring into schools and colleges across the country for months, raising concerns among law enforcement and elected leaders.

Five people were killed and six others hospitalized in a shooting at a bank building Monday morning in downtown Louisville, police said. The suspected shooter is also dead.

Police say a 23-year-old armed with a rifle opened fire at his Louisville workplace, killing four people.

Protesters took to the streets in Kansas City on Sunday in support of Ralph Yarl, a 16-year-old who was shot and critically wounded Thursday after he went to the wrong house to pick up his younger twin brothers, according to family.

A Georgia man shot two of his relatives and a fast food worker dead before killing himself on Thursday in rural south Georgia, the local coroner said.

As many as 15 people, including three children, were injured in a drive-by shooting on Halloween night that sent shots flying into a crowd along a Chicago street corner, police said.

In the past week, mass shootings have claimed at least 24 lives and injured 37 others across seven states. Explore the data for yourself in six charts and read more about the killings.