Greenpeace activists hold a banner while Mexico's Energy Minister Pedro Joaquin Coldwell delivers a speech during the Second International Pemex's Expo Forum inside a room at Banamex convention center... more 
Greenpeace activists hold a banner while Mexico's Energy Minister Pedro Joaquin Coldwell delivers a speech during the Second International Pemex's Expo Forum inside a room at Banamex convention center in Mexico City, April 23, 2014. Greenpeace activists called out for a real transformation in the energy sector and for an increased use of renewable sources as part of the energy reforms promoted by the government of Mexico's President Enrique Pena Nieto, according to a Greenpeace statement. The banner reads, "PLUS Renewable energy MINUSOil". REUTERS/Edgard Garrido (MEXICO - Tags: ENVIRONMENT ENERGY CIVIL UNREST) less 
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Reuters | Photo By EDGARD GARRIDO / REUTERS
Wed, Apr 23, 2014 4:26 PM EDT