Protests erupted in Washington, D.C., and in a number of other cities Thursday evening over a pair of police shootings this week that killed two black men.
 
Protesters marched on Pennsylvania Avenue near and around the White House, as well as on streets heading to the Capitol.
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Rep. John Lewis (D-Ga.), a civil rights icon, spoke from the steps of the Capitol about the shootings of Alton Sterling in Baton Rouge, La., and Philando Castile in St. Paul, Minn. 
 
"We stand with you," Lewis said amid interruptions, saying the shootings of the men "is a shame and a disgrace and it must never happen again."
 
Images flooded social media of protesters marching through streets in New York, Philadelphia and Atlanta, among other areas. President Obama, on a trip to Warsaw, Poland, for a NATO summit, commented on the shootings earlier in the evening.
 
Hundreds of protesters gathered despite rain outside the official residence of Minnesota Gov. Mark Dayton (D) to protest the shooting of Castile, a 32-year-old shot during a traffic stop Wednesday.
 
The crowd grew to more than 1,000 as people marched from a vigil for Castile, according to The Associated Press. His girlfriend posted the aftermath of the shooting to Facebook, where it went viral.