CLEVELAND -- Cleveland agreed to sweeping changes in how its police officers use force, treat the community and deal with the mentally ill under a settlement announced Tuesday with the federal government that will put the 1,500-member department under an independent monitor.

The settlement was made public three days after a white Cleveland patrolman was acquitted of manslaughter for his role in a 137-shot barrage of police gunfire that left two unarmed black suspects dead in a car in 2012.

Mayor Frank Jackson said the ambitious plan that was worked out over five months of negotiations with the U.S. Justice Department will be expensive and will take years to put in place. But he said he sees it as a chance to set an example.

"As we move forward, it is my strong belief that as other cities across this country address and look at their police issues in their communities, they will be able to say, 'Let's look at Cleveland, because Cleveland has done it right,'" he said.

In December, after an 18-month investigation prompted in part by the 2012 shooting, the Justice Department issued a scathing report accusing Cleveland police of a pattern of excessive force and other abuses.

The settlement comes amid tension around the U.S. over a string of cases in which blacks died at the hands of police.

It is an expansive list of items aimed at easing tensions between the Cleveland department and the city's residents, especially in the black community. Cleveland is 53 percent black. About two-thirds of its police officers are white. The mayor and the police chief are black.

The reforms were outlined in a 105-page consent decree filed in federal court. It calls for new guidelines and training in the use of force; a switch to community policing, in which officers work closely with their neighborhoods; an overhaul of the machinery for investigating misconduct allegations; modernization of police computer technology; and new training in avoiding racial stereotyping and dealing with the mentally ill.

The police department's compliance will be overseen by an independent monitor approved by the court.

Several other police departments around the country, including those in Seattle and New Orleans, are operating under federal consent decrees that involve independent oversight.

The worst examples of excessive force in the Justice Department report involved officers who endangered lives by shooting at suspects and cars, hit people over the head with guns and used stun guns on handcuffed suspects. Only six officers had been suspended for improper use of force over a three-year period.

The city is awaiting a decision on whether any officers will be prosecuted in two other deaths: that of Tamir Rice, a 12-year-old black boy who was killed by a white patrolman in November while playing with what turned out to be a pellet gun, and that of 37-year-old Tanisha Anderson, a mentally ill woman who suffocated last fall after she was subdued on the ground and handcuffed.

U.S. Attorney Steven M. Dettelbach said the overhaul "will help ensure the many brave men and women of the Cleveland Division of Police can do their jobs not only constitutionally, but also more safely and effectively."

The mayor said when the reforms take hold, community policing will become "part of our DNA."

The Justice Department has launched broad investigations into the practices of more than 20 police forces in the past five years, including agencies in Ferguson, Missouri, and more recently, Baltimore. Both cities were convulsed by violence and protests in recent months over the deaths of black men at the hands of police.

Then-attorney general Eric Holder said in December the Justice Department has intervened in 15 police departments in the country, including eight that are operating under court-ordered consent decrees.

Saturday's verdict by a judge in favor of patrolman Michael Brelo led to a day of mostly peaceful protests but also more than 70 arrests. Dozens of church parishioners also protested the acquittal in a downtown march Tuesday afternoon just before officials announced the settlement.

Cleveland has paid $3 million to the families of the victims in the 2012 shooting, Timothy Russell and Malissa Williams. They were gunned down at the end of a 22-mile car chase that began when police mistook automobile backfire for gunshots.

Thirteen officers shot at the car. Brelo jumped onto the hood and fired the last 15 shots through the windshield.