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Playing the race card in US executions

Anthony Graves, 48, who spent 18 years in US jail, including 16 years on death row, for a crime he didn't commit is pictured on May 20, 2013 in Houston, Texas. The 500th execution carried out by Texas this week has brought the spotlight back on the treatmThe 500th execution carried out by Texas this week has brought the spotlight back on the treatment of black offenders in the United States, and the case of Duane Buck looms large. Like Kimberley McCarthy, the 52-year-old woman given a lethal injection on Wednesday, Buck is an African-American.