Riot police carry a passerby who fainted due to the tear gas used by the police as they dispersed a group of hooded students who blocked the avenue in front of the National University in Bogota, ... more 
Riot police carry a passerby who fainted due to the tear gas used by the police as they dispersed a group of hooded students who blocked the avenue in front of the National University in Bogota, Colombia, Tuesday, May 20, 2014. The students blocked the avenue to shout slogans and distribute pamphlets to commemorate the 50th anniversary of the Revolutionary Armed Forces of Colombia, FARC. (AP Photo/Javier Galeano) less 
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Associated Press | Photo By Javier Galeano
Tue, May 20, 2014 9:18 PM EDT