FILE - This July 12, 1951 file photo shows Illinois National Guardsmen with an angry crowd gathered near apartment in Cicero, Ill. where a black family had rented an apartment. Earlier vandals stripped the apartment and burned the furniture. The St. Louis suburb of Ferguson, Missouri, was roiled by racial unrest after 18-year-old Michael Brown, who was black, was shot and killed by Darren Wilson, a white police officer, on Aug. 9. The street clashes there mirrored past, larger-scale riots in multiple US cities, most of them triggered by perceived racial injustice, or an incident involving police, in already tense communities. (AP Photo, File)