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Firefighters attempt to extinguish a blaze at an unidentified location in Washington, D.C. after the assassination of Dr. Martin Luther King Jr. on April 4, 1968..

The city exploded in anger at the news and experienced among the greatest property damage of the more than 110 cities that erupted April 4-7, 1968 and set a then U.S. record for mass arrests when more than 6,100 were detained.

Twelve died, mostly due to becoming entrapped in burning buildings and over 1,100 were injured. Property damage was extensive as corridors and 14th Street NW, 7th Street NW, U Street NW, H Street NE and Nichols Ave SE (later Martin Luther King Jr. Ave) were set afire. 1,200 buildings were burned.

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Photograph by George Scurlock, Scurlock Studio. Courtesy of the Smithsonian Institution, National Museum of American History: Archives Center.