The first stories about the beating of Rodney King in two major newspapers focused on racial injustice. But that changed.
In 1960s Chicago, members of the Afro-American Patrolman's League challenged oppressive policing in Black communities.
In 1932, the “Bonus Army” of jobless veterans staged a protest in Washington, DC. The government dispersed them with tear gas.
In states transitioning from authoritarianism to democracy, resistance to police abuses can make or break the larger democratic project, explains one social scientist.
Diversity among officers lags behind the general population. But is police culture a greater problem when it comes to combating excessive force?