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ANAHEIM, CA - MAY 25: A protester carries a Mexican flag after a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center earlier in the day on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary. (Photo by David McNew/Getty Images)

ANAHEIM, CA - MAY 25:  A protester carries a Mexican flag after a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center earlier in the day on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary.  (Photo by David McNew/Getty Images)