Fourth and final Arkansas inmate Kenneth Williams executed

Kenneth Williams’ attorneys have appealed to US supreme court to stop his execution on grounds of intellectual disability.Arkansas has carried out its fourth execution within a week, bringing to a troubling end the state’s controversial attempt to run a “conveyor belt of death” in an aggressive burst of killings unseen in the US for more than half a century.Kenneth Williams was pronounced dead at 11.05pm local time at the end of a 13-minute lethal injection that resulted