Police Beating Video(01 of13)
Open Image ModalIn this Jan. 28, 2015, frame from a dashcam video provided by the Inkster Police Department, an officer punches Floyd Dent many times in the head while another officer tries to handcuff Dent, who is on the ground in Inkster, Mich. Dent's face and shirt were bloodied. Police say Dent disregarded stop signs and refused to pull over, then resisted arrest and threatened them. (AP Photo/Inkster Police Department via Detroit News) (credit:ASSOCIATED PRESS)
Police Use of Force Q&A(02 of13)
Open Image ModalIn this combination of still images taken from an April 4, 2015, video provided by attorney L. Chris Stewart, representing the family of Walter Lamer Scott, Scott appears to break away from a confrontation with city patrolman Michael Thomas Slager, right, in North Charleston, S.C. In the video, as Scott runs away, Slager pulls out his handgun and fires at Scott, who drops to the ground after the eighth shot. Slager has been fired and charged with murder following the release of the dramatic video. (AP Photo/Courtesy of L. Chris Stewart) (credit:ASSOCIATED PRESS)
Killings by Police Oklahoma(03 of13)
Open Image ModalIn this photo provided by the Tulsa County, Oklahoma, Sheriff's Office is Tulsa County reserve deputy Robert Bates. Police say Bates, a 73-year-old white reserve deputy, thought he was holding a stun gun, not his handgun, when he fired at 44-year-old Eric Harris in an April 2 incident. Harris, who is black, was treated by medics at the scene and died in a Tulsa hospital. (Tulsa County Sheriff's Office via AP) (credit:ASSOCIATED PRESS)
Nala The Dog's Throat Slit(04 of13)
Open Image ModalThe Shooting Of Arzy Kensington(05 of13)
Open Image ModalKelly Thomas(06 of13)
Open Image ModalFILE - This July 5, 2011 file still frame from security camera video, released May 7, 2012, by the Orange County District Attorney, shows an altercation between Fullerton police officers and Kelly Thomas at the Fullerton, Calif., bus depot. Thomas died days later. Two officers, Manuel Ramos, and Jay Ciccinelli, are on trial charges related to his death. Closing arguments are scheduled to begin Tuesday, Jan. 7, 2013. (AP Photo/Orange County District Attorney, File) (credit:AP)
Ahmed Amadou Diallo(07 of13)
Open Image ModalAhmed Amadou Diallo, 22, seen here in an undated photo, was gunned down at his home in the Bronx borough of New York early Thursday morning, Feb. 4, 1999. Four white police officers from the elite Street Crime Unit fired 41 shots at Diallo, a black West African immigrant who had no police record and was unarmed. Diallo was hit 19 times and died instantly. The officers' lawyer says Diallo gestured with his hands, leading the police to think he was reaching for a gun. (credit:AP)
Abner Loiuma(08 of13)
Open Image ModalAbner Loiuma became a symbol of unchecked police force after the Haitian immigrant was sodomized with a broomstick by cops in a New York City police station in 1997. The officer responsible for the attack, Justin Volpe, was sentenced to 30 years in prison. (credit:Mary Altaffer, AP)
Michael Mineo(09 of13)
Open Image ModalMichael Mineo accused an NYPD cop of sodomizing him with a baton after getting busted for smoking marijuana at a Brooklyn subway station in October 2008. A jury cleared the officer accused in the attack as well as two others charged with covering up the alleged assault. (credit:Craig Ruttle, AP)
Jon Burge(10 of13)
Open Image ModalIn this May 24, 2010 file photo, former Chicago Police commander Jon Burge departs the federal building in Chicago. Burge, whose name has become synonymous with police brutality and abuse of power in Chicago, was convicted in 2010 of perjury and obstruction of justice for lying in a civil suit when he said he'd never witnessed or participated in the torture of suspects. (credit:Charles Rex Arbogast, AP)
Danziger Bridge Shootings(11 of13)
Open Image ModalThe trial is underway for four New Orleans police officers accused of killing two people and wounding four others in the shooting on the Danziger Bridge in the aftermath of Hurricane Katrina in 2005. The suspects, pictured left to right, are Robert Faulcon Jr., Robert Gisevius Jr., Kenneth Bowen, and Anthony Villavaso II. (credit:AP)
Eleanor Bumpurs(12 of13)
Open Image ModalEleanor Bumpurs, a 66-year-old African American woman, was killed by NYPD officers who were trying to evict her from her Bronx public housing apartment in 1984 for falling behind on her rent. City housing authority workers called in the cops, because they claimed that Bumpurs -- shown in an undated photo -- was mentally ill and that she menaced them with a knife while refusing to vacate her home. The officer who shot Bumpers twice with a shotgun was acquitted in 1987. (credit:AP)
Sean Bell(13 of13)
Open Image ModalThe 2006 shooting of 23-year-old Sean Bell raised questions in New York City about the NYPD's use of excessive force. On what would have been his wedding day, Bell was shot and killed by police in a hail of 50 bullets outside a strip club in Queens. Officers said they thought the victim and his friends, who were celebrating Bell's bachelor party, were planning on retrieving a gun from their vehicle when they opened fire. After months of protests around the city, Officers Michael Oliver, Gescard Isnora and Marc Cooper were acquitted in 2008. (credit:Getty)