A supporter of President Nicolas Maduro yells "Viva Chavez" after signing her name to a petition asking the US to end sanctions against Venezuelan officials accused of violating human rights, at Bolivar square in Caracas, Venezuela, Thursday, March 19, 2015. Supporters of embattled President Nicolas Maduro have launched the petition drive to end what they consider U.S. aggression. The goal is to round up 10 million letters and signatures demanding President Obama repeal an order freezing the assets of Venezuelan officials accused of violating human rights during anti-government protests. (AP Photo/Ariana Cubillos), APTOPIX