The state of Missouri has executed Marcellus Williams despite concerns that the convicted murderer might have been innocent. Williams died by lethal injection shortly after 6 p.m. Tuesday at Missouri state prison in Bonne Terre. He was convicted and sentenced to death in 2001 for the 1998 murder of Felicia Gayle, a social worker and former St. Louis Post-Dispatch reporter who was fatally stabbed during a daytime burglary. Republican Missouri Governor Mike Parson, Missouri's Supreme Court and the U.S. Supreme Court all rejected last-minute attempts to halt the execution, ignoring clemency pleas from Williams' lawyers, prosecutors and members of the...