Danielle Allen holds a placard with a picture of Texas Governor Rick Perry as she protests outside the "Walls" prison unit where Edgar Tamayo is scheduled to be executed in Huntsville, Texas January ... more 
Danielle Allen holds a placard with a picture of Texas Governor Rick Perry as she protests outside the "Walls" prison unit where Edgar Tamayo is scheduled to be executed in Huntsville, Texas January 22, 2014. Texas is set to execute Mexican national Tamayo on Wednesday for killing a Houston police officer in 1994 despite objections from the Mexican government, which said implementing the death penalty would violate international treaties. Tamayo, 46, was convicted of shooting dead Houston police officer Guy P. Gaddis, who had arrested him on suspicion of robbery. REUTERS/Richard Carson (UNITED STATES - Tags: POLITICS CRIME LAW CIVIL UNREST) less 
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Reuters | Photo By RICHARD CARSON / REUTERS
Wed, Jan 22, 2014 7:38 PM EST