mentally impaired. marvin wilson was convicted of killing a police informant decades ago. his lawyers argued his i.q. of 61 puts him below the competency standard but the supreme court refused to stop the execution. in the meantime the man behind the gun in an event for gabriel giffords last year will be spared the death penalty. loughner pled guilty in a deal that puts him behind bars for life. now let s take you back to hardball. welcome back to hardball. more details are emerging about wade michael page, gunman who police say killed six and injured three at a sikh temple this sunday. including the powerful role music had in his life and the white supremacy culture. genre referred to as hate rock that spouts racist lyrics and used in recruitment efforts.