Updated: May 17, 2012 at 3:35 PM
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
Protesters demonstrate against NATO as they march to the Canadian consulate on May 17, 2012 in Chicago. The protest was held as part of weeklong demonstrations leading up to the NATO summit being held on May 20 and May 21 in Chicago. UPI/Brian Kersey
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A Protester holds a photo of U.S. President Barack Obama as he demonstrates against NATO in front of the Canadian consulate on May 17, 2012 in Chicago. The protest was held as part of weeklong demonstrations leading up to the NATO summit being held on May 20 and May 21 in Chicago. UPI/Brian Kersey
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A Protester holds a photo of U.S. President Barack Obama as he demonstrates against NATO in front of the Canadian consulate on May 17, 2012 in Chicago. The protest was held as part of weeklong demonstrations leading up to the NATO summit being held on May 20 and May 21 in Chicago. UPI/Brian Kersey
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A protester who identified herself as "Olive" holds a sign as she demonstrates against NATO in front of the Canadian consulate on May 17, 2012 in Chicago. The protest was held as part of weeklong demonstrations leading up to the NATO summit being held on May 20 and May 21 in Chicago. UPI/Brian Kersey
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