== With AFP Story by Chantel VALERY: US-JUSTICE-EXECUTION-500th == 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 US State of Texas executed its 500th convict since the death penalty was restored in 1976, a record in a country where capital punishment is elsewhere in decline. AFP PHOTO / CHANTAL VALERY (Photo credit should read CHANTAL VALERY/AFP via Getty Images)
