A protester is detained by police, in clashes, in Santiago, Chile. 一名抗議者被警方扣押, 衝突

A protester is detained by police after a student protest ended in clashes in Santiago, Chile, Tuesday, Dec. 22, 2015. Students marched against what they consider "improvisation" in the government's proposals to free education. (AP Photo/Luis Hidalgo)
Photos of the day - December 23, 2015
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