FILE – In this Dec. 9, 2014, file photo, Richmond Chief of Police Chris Magnus stands with demonstrators to protest the Michael Brown and Eric Garner deaths during a peaceful demonstration in Richmond, Calif. In cities and states nationwide, police departments are already altering policies and procedures to temper concerns about police conduct in the aftermath of recent cases of black males dying at the hands of white officers. (AP Photo/Bay Area News Group, Kristopher Skinner, File)