The fatal police shootings of Alton Sterling in Baton Rouge, Louisiana, and Philando Castile in St. Paul, Minnesota, reignited protests nationwide over law enforcement's treatment of African-Americans.
The deaths of five police officers in Dallas, shot by a sniper as they stood guard over a peaceful protest, added another dimension to a week of tragedy.
Here's a look at some of the poignant moments of protest:
A demonstrator protesting the shooting death of Alton Sterling is detained by law enforcement near the headquarters of the Baton Rouge Police Department in Baton Rouge, Louisiana, July 9, 2016.