Missouri inmate Marcellus Williams was executed by lethal injection Tuesday, although the victim's family and prosecutor opposed his death sentence. Marcellus, despite steadfastly maintaining his innocence, was convicted of the 1998 stabbing death of journalist Felicia Gayle in her University City, Missouri home. Williams' attorneys, in a valiant effort, argued that there was racial discrimination during juror selection and that DNA evidence in the case was mishandled. They p