Thousands seeking criminal justice reform and seeking meaningful action in ending systemic racism gathered at the National Mall on Aug. 28, 2020, on the 57th anniversary of the 1963 March on Washington, under the rallying cry "Get Your Knee Off Our Necks," a reference to the manner in which George Floyd was killed while in police custody.

A demonstrator holds a Black Lives Matter flag as he wades into the Lincoln Memorial reflecting pool as protesters gather in Washington, Aug. 28, 2020.
Tom Brenner/Reuters