A Chilean riot police officer trips and falls down, as he and his fellow officers run away from flames from a petrol bomb thrown by protesters in violent clashes, during a student march in Santiago, ... more 
A Chilean riot police officer trips and falls down, as he and his fellow officers run away from flames from a petrol bomb thrown by protesters in violent clashes, during a student march in Santiago, Chile, Thursday, May 8, 2014. Tens of thousands of students protested in Chile in the first march demanding education reform since President Michelle Bachelet took power on promises of deep changes. (AP Photo / Luis Hidalgo) less 
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Associated Press
Thu, May 8, 2014 6:21 PM EDT