A crowd surrounds a burning squad car during unrest in the Humboldt Park neighborhood of Chicago on June 12, 1966.
A crowd pushes a squad car in an apparent attempt to tip it on June 12, 1966, in the Humboldt Park neighborhood of Chicago.
Chicago police officers duck as people throw bottles and stones while officers advance on the crowd on June 12, 1966.
Police search a man during a flareup of violence on June 12, 1966, in the Humboldt Park neighborhood.
Chicago police Sgt. James Delaney sits in patrol car after the windshield was cracked by a rock near Division Street and California Avenue on June 12, 1966.
A crowd marches through the streets of Humboldt Park as it carries Juan Gonzalez, 20, after he was reportedly bitten by a police dog on June 12, 1966.
Tribune photojournalist Ray Foster checks the photos he took before people assaulted him and smashed his camera while he documented the unrest in Humboldt Park.
One of the three squad cars burned June 12, 1966, during clashes near Division Street and Damen Avenue in Chicago.
A cat perches near Park View Restaurant, 2757 W. Division St. Its windows were smashed during looting that followed a police shooting of a young Puerto Rican resident on June 12, 1966.
A crowd gathers at the North Side boys court at 937 N. Wood St. on June 13, 1966, as many people who were arrested during the unrest in Humboldt Park faced charges ranging from burglary to disorderly conduct .
