Protests begin ahead of NATO summit in Chicago (46 images)
Protesters gathered outside of the new Immigration and Customs Enforcement court building as part of weeklong demonstrations leading up to the NATO summit being held on May 20 and May 21 in Chicago. UPI/Brian Kersey
A protester plays a trumpet as he marches through the city on May 15, 2012 in Chicago. Protesters are flooding Chicago for weeklong demonstrations leading up to the NATO summit being held on May 20 and May 21 in the city. UPI/Brian Kersey
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