The Boeoegg, a snowman made of wadding and filled with firecrackers, explodes atop a bonfire in the Sechselaeuten square in Zurich April 11, 2011.  [Photo/Agencies]

People look down at a burnt car during protests in Mexico City April 11, 2011. Members of the Mexican Electrical Workers Union (SME) burned cars and blocked roads during a protest to demand the reinstatement of the state-owned company Luz y Fuerza del Centro (Central Light and Power Company) that supplied electricity to Mexico City and its surrounding area. Luz Fuerza del Centro was shut down in October 2009 due to its inefficiency. [Photo/Agencies]