OAK BROOK, IL - MAY 21: Police guard the entrance of McDonald's corporate campus as about 2000 fast food workers and activists demonstrating for higher wages march toward the facility on May 21, 2014 in Oak Brook, Illinois. The demonstrators were calling on McDonald's and other fast food restaurant chains to pay a minimum wage of $15-per-hour and offer better working conditions for their employees. Several of the demonstrators were arrested. McDonald's is scheduled to hold its annual shareholder's meeting tomorrow at the campus. (Photo by Scott Olson/Getty Images)
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