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Los Angeles Plans to Outfit Every Cop With a Camera

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Los Angeles will announce plans Tuesday to outfit every city police officer with body-worn cameras, an ambitious change that would make it the biggest police force in the country to fully adopt the devices.

Mayor Eric Garcetti will announce the roll-out of wearable cameras Tuesday and attempt to position the LAPD as a national leader in using devices that advocates say reduce use-of-force incidents and citizen complaints, while also providing recorded evidence of confrontations with police.

MORE: The one battle Michael Brown’s family will win

Los Angeles police have been testing body-worn cameras since January, but communities have increasingly adopted them since the police shooting death of Michael Brown in Ferguson, Mo., in August. No video recordings of the incident were taken, and witnesses had conflicting accounts of Brown’s encounter with Officer Darren Wilson, who a grand jury decided not to indict.

Experts say more than 5,000 of the 18,500 police departments around the U.S. are either testing or using the cameras, including some of the biggest agencies in the country, like the New York Police Department and the Metropolitan Police Department in Washington, D.C.

Witness Tension Between Police and Protestors in Ferguson, Mo.

A man backs away as law enforcement officials close in on him and eventually detain him during protests over the death of Michael Brown, an unarmed black teenager killed by a police officer, in Ferguson, Mo.
A man backs away as law enforcement officials close in on him and eventually detain him during protests over the death of Michael Brown, an unarmed black teenager killed by a police officer, in Ferguson, Mo., Aug. 11, 2014. Whitney Curtis—The New York Times/Redux
Ferguson St. Louis Missouri Police Shooting Riots Protests
Riot police force protestors from the business district into nearby neighborhoods in Ferguson, Mo. on Aug. 11, 2014.Scott Olson—Getty Images
Ferguson St. Louis Missouri Police Shooting Riots Protests
A child uses a rag to shield his face from tear gas fired by riot police, who used it to force protestors from the business district into nearby neighborhoods in Ferguson, Mo. on Aug. 11, 2014.Scott Olson—Getty Images
Ferguson St. Louis Missouri Police Shooting Riots Protests
Police officers keep watch from an armored vehicle as they patrol a street in Ferguson, Mo., on Aug. 11, 2014Mario Anzuoni—Reuters
Ferguson St. Louis Missouri Police Shooting Riots Protests
Police officers ride an armored vehicle as they patrol a street in Ferguson, Mo. on Aug. 11, 2014.Mario Anzuoni—Reuters
Ferguson St. Louis Missouri Police Shooting Riots Protests
A demonstrator raises his hands in front of of a police officer in Ferguson, Mo. on Aug. 11, 2014.Mario Anzuoni—Reuters
Ferguson St. Louis Missouri Police Shooting Riots Protests
Riot police lock down a neighborhood in Ferguson, Mo. on Aug. 11, 2014.Scott Olson—Getty Images
Ferguson St. Louis Missouri Police Shooting Riots Protests
People raise their hands in the middle of the street as riot police move toward their position trying to get them to disperse, in Ferguson, Mo. on Aug. 11, 2014.Jeff Roberson—AP
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Demonstrators raise their hands and chant "hands up, don't shoot" during a protest over the killing of Michael Brown on in Clayton, Mo. on August 12, 2014.Scott Olson—Getty Images
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Civil rights leader Rev. Al Sharpton speaks about the killing of teenager Michael Brown at a press conference held on the steps of the old courthouse in St. Louis on Aug. 12, 2014.Scott Olson—Getty Images
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Police take up position to control demonstrators who were protesting the killing of teenager Michael Brown in Ferguson, Mo. on Aug. 12, 2014.Scott Olson—Getty Images
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Demonstrators protest the killing of teenager Michael Brown in Ferguson, Mo. on August 12, 2014.Scott Olson—Getty Images
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Demonstrators protest the killing of teenager Michael Brown outside Greater St. Marks Family Church in St. Louis on Aug. 12, 2014.Scott Olson—Getty Images
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Police stand watch as demonstrators protest the shooting death of teenager Michael Brown in Ferguson, Mo. on Aug. 13, 2014.Scott Olson—Getty Images
TEAR GAS SHOT AT PROTESTORS
A demonstrator throws back a tear gas container after tactical officers worked to break up a group of bystanders on Chambers Road near West Florissant in Ferguson on Aug. 13, 2014. Robert Cohen—St. Louis Post-Dispatch/MCT/Zuma Press
Police Shooting Missouri
Police officers work their way north on West Florissant Avenue clearing the road of people in Ferguson, Mo. on Aug. 13, 2014. Robert Cohen—St. Louis Post-Dispatch/AP
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Demonstrators protest the shooting death of teenager Michael Brown in Ferguson, Mo. on Aug. 13, 2014.Scott Olson—Getty Images
Police Shooting Missouri
People run through smoke in Ferguson, Mo. on Aug. 13, 2014.Jeff Roberson—AP
APTOPIX Police Shooting Missouri
A protester takes shelter from smoke billowing around him in Ferguson, Mo. on Aug. 13, 2014.David Carson—St. Louis Post-Dispatch/AP
Police Shooting Missouri
An explosive device deployed by police flies in the air as police and protesters clash in Ferguson, Mo., on Aug. 13, 2014Jeff Roberson—AP
Police Shooting Missouri
Thousands of demonstrators peacefully march to the spot where Michael Brown was shot and killed by police in Ferguson, Mo. on Aug. 14, 2014. Jeff Roberson—AP
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Demetrus Washington joins other demonstrators protesting the shooting death of teenager Michael Brown in Ferguson, Mo. on Aug. 14, 2014.Scott Olson—Getty Images
Demonstrators protest outside of Greater St. Marks Family Church in Ferguson, Missouri
Demonstrators protest outside of Greater St. Marks Family Church in Ferguson, Mo. on Aug. 14, 2014. Lucas Jackson—Reuters
Protesters take part in a peaceful demonstration against shooting of Michael Brown, in Ferguson, Missouri
Protesters light candles as they take part in a peaceful demonstration in Ferguson, Mo. on Aug. 14, 2014. Lucas Jackson—Reuters
Missouri State Highway Patrol Captain Ron Johnson speaks to protesters as he walks through a peaceful demonstration as communities continue to react to the shooting of Michael Brown in Ferguson
Missouri State Highway Patrol Captain Ron Johnson (L) speaks to protesters as he walks through a peaceful demonstration as communities continue to react to the shooting of Michael Brown in Ferguson, Mo. on Aug. 14, 2014. Lucas Jackson—Reuters
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
A young child looks out from a car as demonstrators drive down West Florissant Avenue protesting the shooting and death of Michael Brown in Ferguson, Mo. on Aug. 15, 2014.Scott Olson—Getty Images
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
A demonstrator walks through smoke launched by police after a skirmish in Ferguson, Mo. on Aug. 15, 2014Scott Olson—Getty Images
Ferguson Lowenstein
A demonstrator protests on Florissant Ave in Ferguson, Mo. on Aug. 16, 2014. Jon Lowenstein—NOOR for TIME
Ferguson Lowenstein
Children walk past police officers during a demonstration in Ferguson, Mo. on Aug. 16, 2014. Jon Lowenstein—Noor for TIME
Ferguson Lowenstein
Protestors help a man who was injured by tear gas thrown by police after refusing to disperse after the midnight curfew in Ferguson, Mo. on Aug. 17, 2014. Jon Lowenstein—Noor for TIME
Ferguson Jon Lowenstein Teargas
Protestors throw canisters in Ferguson, Mo. on August 18, 2014.Jon Lowenstein—Noor for TIME
Ferguson Lowenstein
Protestors demonstrate against the killing of Michael Brown by police officer Darren Wilson in Ferguson, Mo. on August 17, 2014.Jon Lowenstein—NOOR for TIME
Ferguson Lowenstein
A protestor during demonstrations in Ferguson, Mo. on August 17, 2014.Jon Lowenstein—Noor for TIME
Ferguson Lowenstein
A protestor retaliates against police in Ferguson, Mo. on Aug. 17, 2014.Jon Lowenstein—Noor for TIME
Ferguson Lowenstein
A protestor throws a canister of tear gas back at police during demonstrations in Ferguson, Mo. on Aug. 17, 2014.Jon Lowenstein—Noor for TIME
Police Shooting Missouri
Police wait to advance after tear gas was used to dispersed a crowd in Ferguson, Mo. on Aug. 17, 2014.Charlie Riedel—AP
Ferguson Lowenstein
A protestor holds a sign that reads "stop killing us" amid clouds of tear gas in Ferguson, Mo. on Aug. 17, 2014.Jon Lowenstein—Noor for TIME
Police Shooting Missouri
Police wait to advance after tear gas was used to disperse a crowd in Ferguson, Mo. on Aug. 17, 2014.Charlie Riedel—AP
Outrage In Missouri Town After Police Shooting Of 18-Yr-Old Man
Tear gas rains down on a woman kneeling in the street with her hands in the air during a demonstration in Ferguson on Aug. 17, 2014. The "hands up, don't shoot" pose became the defining gesture of the protests.Scott Olson—Getty Images
Protesters react to the effects of tear gas which was fired at demonstrators reacting to the shooting of Michael Brown in Ferguson, Missouri
Protesters attempt to treat a woman who was in a cloud of tear gas thrown by police in Ferguson, Mo. on Aug. 17, 2014. Lucas Jackson—Reuters
Demonstrators march down West Florissant during a peaceful march in reaction to the shooting of Michael Brown near Ferguson, Missouri
Demonstrators march down West Florissant Ave. during a peaceful march in reaction to the shooting of Michael Brown near Ferguson, Mo. on Aug. 18, 2014. Lucas Jackson—Reuters
REUTERS PICTURE HIGHLIGHT
Demonstrators march down West Florissant during a peaceful march in reaction to the shooting of Michael Brown, near Ferguson, Mo. on Aug. 18, 2014. Lucas Jackson—Reuters
Police arrest two in front of McDonalds
Police tackle a man who was walking down the street in front of McDonald's in Ferguson, Mo. on Aug. 18, 2014.Laurie Skrivan—St. Louis Post-Dispatch/AP
US-CRIME-RACE-POLICE-SHOOTING
Law enforcement officers watch on during a protest on West Florissant Avenue in Ferguson, Mo. on Aug. 18, 2014. Michael B. Thomas—AFP/Getty Images
National Guard Called In As Unrest Continues In Ferguson
Demonstrators cover their faces as tear gas fills the air as police fire the gas against an unruly crowd protesting the shooting death of Michael Brown in Ferguson, Mo. on Aug.18, 2014Joe Raedle—Getty Images
Violence between police and protestors erupts in Ferguson - again
A protestor wearing a gas mask stands with his hands up while facing armed police in Ferguson, Mo. on Aug. 18, 2014. Abe Van Dyke—Demotix/Corbis
Police fire tear gas in the direction of where bottles were thrown from crowds gathered near the QuikTrip on W. Florissant Avenue on Aug. 18, 2014.
Police fire tear gas in the direction of where bottles were thrown from crowds gathered near the QuikTrip on W. Florissant Avenue in Ferguson, Mo. on Aug. 18, 2014. David Carson—St Louis Post-Dispatch/Polaris
Demonstrators stand in the middle of West Florissant as they react to tear gas fired by police during ongoing protests in reaction to the shooting of Brown, near Ferguson
Demonstrators stand in the middle of West Florissant as they react to tear gas fired by police during ongoing protests in reaction to the shooting of teenager Michael Brown, near Ferguson, Missouri, August 18, 2014. Lucas Jackson—Reuters
Demonstrators protest against the fatal shooting of Michael Brown in Ferguson, Mo. Aug. 19, 2014.
Demonstrators protest against the fatal shooting of Michael Brown in Ferguson, Mo. Aug. 19, 2014. Joshua Lott—Reuters
A police officer in riot gear detains a demonstrator protesting against the shooting of Michael Brown, in Ferguson
A police officer in riot gear detains a demonstrator protesting against the shooting of Michael Brown, in Ferguson, Mo. on Aug. 19, 2014. Joshua Lott—Reuters
Police officers in riot gear watch demonstrators protesting against the shooting of Michael Brown from the side of a building in Ferguson
Police officers in riot gear watch demonstrators protesting against the shooting of Michael Brown from the side of a building in Ferguson, Mo. on Aug. 19, 2014. Joshua Lott—Reuters
TOPSHOTS-US-CRIME-RACE-POLICE-SHOOTING
Two protesters sit with their faces covered during a peaceful protest in Ferguson, Mo. early on Aug. 20, 2014. Michael B. Thomas—AFP/Getty Images
A man is doused with milk and sprayed with mist after being hit by an eye irritant from security forces trying to disperse demonstrators protesting against the shooting of Brown in Ferguson
A man is doused with milk and sprayed with mist after being hit by an eye irritant from security forces trying to disperse demonstrators in Ferguson, Mo. early on Aug. 20, 2014. Adrees Latif—Reuters
APTOPIX Police Shooting Missouri
In this photo taken with a long exposure, protesters march in the street as lightning flashes in the distance in Ferguson, Mo., Aug. 20, 2014.Jeff Roberson—AP

While there are few studies showing the benefits of body-worn cameras, the one department that appears to have had proven success with them is in the Los Angeles suburb of Rialto, where the agency reported an 88% drop in complaints filed against officers and a 60% decline in use-of-force incidents since its officers started using wearable cameras in February 2012.

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