Law enforcement tells ABC News a local police officer was on the roof of the building and confronted the shooter seconds before he opened fire on former President Donald Trump.

Presidential historian Mark Updegrove speaks to ABC's Linsey Davis about past shootings targeting political figures.

Authorities in Alabama say four people died in a shooting at a Birmingham nightclub late Saturday, while an earlier shooting outside a home killed three people, including a young child

A suspect has been charged with killing a Houston-area sheriff’s deputy and assaulting a pizzeria clerk

Authorities in Houston have charged a suspect with capital murder in the shooting death of an off-duty deputy overnight, a sheriff's official said Thursday evening.

The incident started when Harris County deputies responded to an aggravated assault at a Little Caesars pizza shop, Harris County Sheriff's Office Chief Deputy Mike Lee told reporters.

California authorities say a man is in custody after fatally shooting his wife, their 6-year-old son and his wife’s parents Wednesday night

Police are looking for a gunman who fired into a crowd in Boston, injuring five people including a child

The mother of Michael Brown, who was shot and killed by a Ferguson police officer in 2014, urged a commission to review the case in a public hearing on Wednesday.

Charlotte-Mecklenburg police are offering a $10,000 reward for information in the string of shootings on Tuesday morning.

Police in Charlotte, North Carolina, are asking the public to help them solve a string of seemingly connected shootings.

The Young3, the community outreach division of the 3-on-3 basketball league BIG3, looks to uplift inner city communities the league visits this summer.

More than 100 people were shot -- 19 fatally -- over the July 4 holiday weekend in Chicago, according to police.

Detroit Police Chief James White said two people are dead and 19 injured after a shooting at a large illegal block party in east Detroit on Sunday.

At least two people were killed and 19 others were injured when gunfire erupted early Sunday at a block party in Detroit, according to police.

Two people were killed, and more than a dozen were left injured in a Michigan mass shooting overnight, with authorities launching a full-scale investigation.

Police say four people were killed and three others were wounded in an early morning shooting during a party at a home in northern Kentucky

An armed suspect who was allegedly making threats in Yellowstone National Park is dead following a shootout with rangers, the National Park Service said.

Two women in a home in Chicago, a police officer serving a warrant in Cleveland and an armed person making threats in Yellowstone National Park are among people who have been killed in shootings on the Fourth of July

Jayda Woods-Johnson was “tragically murdered” at the Alderwood Mall, the Lynnwood Police Department said.

A 16-year-old suspect from Edmonds, Washington, was in custody, police said.

A 23-year-old Oakland man has been charged in connection with a mass shooting that wounded 14 at a Juneteenth celebration last month

Violence and mass shootings often surge in the summer months

The family of a 13-year-old boy who was fatally shot by police in Utica, New York, is demanding justice.

Police say the boy had brandished what turned out to be a fake gun. ABC News’ Andrea Fujii has the new details.

The highest number was in 2023, which saw 28 mass shootings between July 1-7.

The victims are expected to survive, according to investigators.

Police say the shooting, which injured seven people, may have been racially motivated.

Four people, including two children, were injured in a shooting at a gas station in Milwaukee on Wednesday.

The suspect, 57-year-old Erick Adams, was located on Tuesday and "is no longer a threat to the community," police said.

U.S. Surgeon General Dr. Vivek Murthy warns about the high rates of gun deaths in the country, now the leading cause of death among children and teens.

A man allegedly killed five people and critically injured a 13-year-old in shootings at two apartments in North Las Vegas, Nevada, authorities said.

U.S. Surgeon General Vivek Murthy talks to ABC News Live about his decision to declare gun violence a public health crisis for the first time ever.

The U.S. Surgeon General, Dr. Vivek Murthy, has issued a new advisory on Tuesday declaring gun violence a public health crisis.

A man is dead after allegedly gunning down his mother, his cousin and an ex-girlfriend's new partner in three separate shootings in Florida Monday night.

Javontee Brice, 28, allegedly shot and killed his mother, cousin and ex-girlfriend’s new partner in Bradenton, Florida, Monday night.

ABC News medical contributor Dr. Alok Patel discusses how gun violence affects youth in the U.S. mentally and physically.

Dr. Vivek Murthy’s concerns appear rooted in disturbing new trends, including the fact that gun violence has recently emerged as the leading cause of death for children and teens in this country.

The driver of a vehicle authorities say was involved in an overnight shooting in Columbus, Ohio, that left 10 people injured has turned himself in, police said.

The suspect, Travis Eugene Posey, is being charged with capital murder.

Columbus police said they were searching for a suspect and a Honda Civic that may have been involved.

Police said they recovered a gun at the scene, and it's currently undergoing testing.

A fourth person has died and four others remain hospitalized after a mass shooting in Arkansas on Friday, authorities said.

Authorities identify those who were killed in the Arkansas mass shooting at a grocery store near Little Rock on Friday.

The shooting at an Arkansas grocery store on Friday was "a completely random, senseless act," Arkansas State Police Col. Mike Hagar said in a press conference Sunday.

A 3-year-old boy was killed and his 7-year-old sister was injured by gunfire while at a family gathering Friday night in Buffalo, New York, officials said.

Police identified 44-year-old Travis Eugene Posey as the suspect in the Arkansas grocery store shooting.

Investigators in Louisville, Kentucky, are searching for clues after eight people were shot in a nightclub early Saturday morning.

The 44-year-old suspect has been charged with three counts of capital murder.

Police responded to the shooting at the Mad Butcher grocery store in Fordyce, about 70 miles south of Little Rock, according to Arkansas State Police.