More than 340 plaintiffs were awarded $9.25m over police violence during 2020 George Floyd protests.
Attorney General Merrick Garland says civil rights probe documented excessive force and bias against Black residents.
Five former officers face second-degree murder charges in beating death of the 29-year-old Black motorist in Memphis.
Darryl Tyree Williams, an African American, told police he had a heart problem during an arrest. They tased him anyway.