The Justice Department is launching a broad investigation into the practices of the Ferguson, Missouri, police department.
Authorities are searching for Eric Mathew Frein, the suspect in the ambush of two state police troopers.
California Highway Patrol officers recalled how they saved a driver who was trapped after a crash.
More than 2,000 people marked the one-year anniversary of the Navy Yard shootings.
Police Commissioner Bill Bratton said New York City has entered a "new era'' of potential terror threats.
A Pennsylvania state trooper who was injured when a gunman ambushed him and killed another trooper outside a police barracks is conscious and talking for the first time since he underwent surgery.
Using video surveillance as evidence, a man is suing a Baltimore City police officer, claiming he physically abused him.
A fight broke out between Batman, Spider-Man and a third person, who the NYPD says heckled the superheroes.
Despite living with the nightmare of cancer, a boy's dream of being an officer became a reality.
With the toll of a bell and a solemn moment of silence, the nation paused to mark the 13th anniversary of the Sept. 11, 2001, terror attack.
Thousands of police officers from across country joined Rochester Police to salute Officer Daryl Pierson on his final journey home.
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An officer with the Phoenix Police Department stepped in to help after thieves burglarized a woman's home five times.
A Guthrie County deputy said he is lucky to be alive after being attacked and assaulted while on duty.