FILE - In this Friday, July 8, 2016 file photo, a woman holds a sign as she and hundreds of other protesters march against the recent fatal shootings by police of black men in San Francisco. Over the course of the Black Lives Matter movement, black activists have had mixed feelings about the response from whites _ commending those who have supported the effort yet decrying what they perceive as disinterest or hostility from a majority of whites. (AP Photo/Noah Berger)
