Article Photos: Riot police storm opposition offices in Ukraine 4/18

Riot police officers leave their bus to block Pro-European Union activists gathered at the Independence Square in KIev, Ukraine, Monday, Dec. 9, 2013. The policemen, wearing helmets and holding shields, formed a chain across Kievâs main street outside the city building. Organizers called on protesters to vacate the city hall and the other building which the opposition had used as its headquarters. (AP Photo/Sergei Chuzavkov)