Leopoldo Lopez (R), an ardent opponent of Venezuela’s socialist government facing an arrest warrant, is escorted by the National Guard after turning himself in, during a demonstration in Caracas on February 18, 2014. Fugitive Venezuelan opposition leader Lopez turned himself into police Tuesday at a march by thousands of his supporters. Lopez, blamed by President Nicolas Maduro for violent clashes that left three people dead last week, appeared at an anti-government rally in eastern Caracas and quickly surrendered to police. AFP PHOTO / JUAN BARRETO