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Journalists and students protest the murder of Mexican journalist Regina Martinez, in Xalapa, Veracruz State, Mexico, on April 29, 2012. Martinez was founded dead in her house last April 28, with signs of strangulation. More than 40,000 people have been killed in rising drug-related violence in Mexico since December 2006, when President Felipe Calderon deployed soldiers and federal police to take on organized crime. AFP PHOTO/SERGIO HERNANDEZ (Photo credit should read SERGIO HERNANDEZ/AFP/GettyImages)

Journalists and students protest the murder of Mexican journalist Regina Martinez, in Xalapa, Veracruz State, Mexico, on April 29, 2012. Martinez was founded dead in her house last April 28, with signs of strangulation. More than 40,000 people have been killed in rising drug-related violence in Mexico since December 2006, when President Felipe Calderon deployed soldiers and federal police to take on organized crime. AFP PHOTO/SERGIO HERNANDEZ        (Photo credit should read SERGIO HERNANDEZ/AFP/GettyImages)