Mansur Ball-Bey, 18, was killed Wednesday in St. Louis, Missouri when he pointed a gun at two white policemen as they were serving a search warrant. Officers deployed tear gas into the crowds after a protest broke out.
St. Louis Protesters Clash with Police After Fatal Shooting

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Police arrest a protester who was in the middle of the street after a shooting incident in St. Louis, Aug. 19, 2015.

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Area residents talk to police after a shooting incident in St. Louis, Aug. 19, 2015.