Venezuelan students clash with riot police during a protest against the government of President Nicolas Maduro, in Caracas on March 12, 2014. A young man was shot dead in a confused event during protests in the city of Valencia, in northern Venezuela. About 3,000 Venezuelan students marched Wednesday to mark a month since the first deaths in anti-government protests that have now claimed at least 22 lives. AFP PHOTO/LEO RAMIREZ (Photo credit should read LEO RAMIREZ/AFP/Getty Images)