Mar 15, 2012 6:55 PM by Jacqui Heinrich
SANTIAGO, Chile (AP) - Police have used water cannons and tear gas to break up a march by thousands of Chilean students. It is the first protest this year by student groups whose demonstrations demanding education reform paralyzed major cities in 2011.
Protest leaders say between 5,000 and 7,000 high school students marched down Santiago's main avenue on Thursday, while police put the number at 2,000 and said they had detained 50 protesters.
Police broke up the march when a few hundred students crossed a police barrier and tried to march to the education ministry. The streams of water knocked over some protesters.
Police said the march wasn't authorized by municipal authorities because the students didn't apply for permission 48 hours in advance.