The review also echoed the same findings as other recent reviews of the department, including the San Francisco District Attorney's Blue Ribbon Panel Report and a civil grand jury report issued earlier this year.
San Francisco Mayor Ed Lee asked the Justice Department to step in and investigate the department's practices in February, and the Justice Department found enough material to fill 432 pages.
Ronald Davis, director of the Department of Justice's Community Oriented Policing Services department, which conducted the report, said in a statement that it "makes clear the significant challenges that lie ahead for the Police Department and the city". "More than 90 findings outlined in the report reflect key operational deficiencies in the police department".
Halloran noted that the report recommends the use of Tasers, a practice supported by the union but opposed by many community advocates.
The report also found the majority of deadly use of force incidents by the department involved persons of color.
Chaplin was discussing the results of a report released Wednesday by the U.S. Department of Justice that showed blacks are significantly more likely to be pulled over and have force used against them by San Francisco police than any other racial group.
When it comes to traffic stops, the report said that African Americans are "disproportionately" stopped, and black and Hispanic drivers are searched too frequently.
Lee told the San Francisco Gate he was "directing the leadership of the San Francisco Police Department and the Police Commission to implement these reforms as soon as possible with one specific goal in mind: fair and just policing that treats everyone the same and places the sanctity of life above all else".
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The assessment was broken down into five separate areas of the SFPD, including use of force and bias in policing methods.
"We are committed to the work that needs to be done to bring our systems into the 21st century".
City officials requested the review following the shooting death of a young black man, Mario Woods, previous year and the emergence of homophobic and racist text messages exchanged between officers. The SFPD isn't transparent about its disciplinary process for officers who are implicated in misconduct, COPS investigators found.
San Francisco's police department was roiled by months of angry protests after the videotaped police killing of a black man last December.
The texts referred to a Latino man using a derogatory term and compared black people to "a pack of wild animals on the loose".
Fatal shootings by officers also nearly always involved minorities; from May 2013 to May 2016, nine of the 11 killed by police were people of color, the Justice Department found.
Suhr resigned only hours after the fatal police shooting in the Bayview that left an apparently unarmed 27-year-old female suspect dead.