Supporters of Republican presidential candidate Donald Trump, left, face off with protesters after a rally on the campus of the University of Illinois-Chicago was cancelled due to security concerns Friday, March 11, 2016, in Chicago.
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See the scene at the UIC Pavilion in Chicago as presidential candidate Donald Trump postponed a Friday campaign appearance in Chicago.
Protesters against Republican presidential candidate Donald Trump celebrate after it was announced that a rally for Trump was canceled due to security concerns on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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Chicago police start to clear the crowd after a rally for Republican presidential candidate Donald Trump was canceled on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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Supporters of Republican presidential candidate Donald Trump, left, face off with protesters after a rally on the campus of the University of Illinois-Chicago was cancelled due to security concerns Friday, March 11, 2016, in Chicago.
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A protester holds up a ripped campaign sign for Republican presidential candidate Donald Trump before a rally on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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Protestor Sanko Hampton displays an American flag in Chicago on Friday, March 11, 2016, before a rally with Republican presidential candidate Donald Trump at the University of Illinois-Chicago.
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Demonstrators hold signs outside a campaign event for Donald Trump, president and chief executive of Trump Organization Inc. and 2016 Republican presidential candidate, not pictured, in Chicago, Illinois, U.S., on Friday, March 11, 2016. Trump's raucous campaign tour makes its first stops today in U.S. cities still wrestling with racial tension spawned by police shootings, just as his rallies have turned increasingly violent.
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Two protesters of Republican presidential candidate, Donald Trump stand outside on the University of Illinois-Chicago campus before a Trump rally,, Friday, March 11, 2016, in Chicago.
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A Chicago police officer stands his post outside the University of Illinois-Chicago Pavilion, before a rally for Republican presidential candidate Donald Trump Friday, March 11, 2016, in Chicago.
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A supporter of Republican presidential candidate, Donald Trump waits in line before a rally on the University of Illinois-Chicago campus, Friday, March 11, 2016, in Chicago.
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Protestors march in Chicago on Friday, March 11, 2016, before a rally with Republican presidential candidate Donald Trump at the University of Illinois-Chicago.
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Protestors march in Chicago on Friday, March 11, 2016, before a rally with Republican presidential candidate Donald Trump at the University of Illinois-Chicago.
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Protestors march in Chicago on Friday, March 11, 2016, before a rally with Republican presidential candidate Donald Trump at the University of Illinois-Chicago.
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Protestor Sanko Hampton marches in Chicago on Friday, March 11, 2016, before a rally with Republican presidential candidate Donald Trump at the University of Illinois-Chicago.
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A protester raises his fist to supporters of Republican presidential candidate Donald Trump before a rally on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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Ed Landmichl, a supporter of Republican presidential candidate Donald Trump, has his portrait made before a rally on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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Attendees watch as protesters are removed before a rally for Republican presidential candidate Donald Trump on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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A supporter of Republican presidential candidate Donald Trump tries to pump up the crowd before a rally on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago. The rally was canceled.
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Chicago police start to clear the crowd after a rally for Republican presidential candidate Donald Trump was canceled on the campus of the University of Illinois-Chicago, Friday, March 11, 2016, in Chicago.
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Protesters of Republican presidential candidate Donald Trump, right, chant after a rally on the campus of the University of Illinois-Chicago, was canceled due to security concerns Friday, March 11, 2016, in Chicago.
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