Robert Earl O'Neal Jr. (September 25, 1961 – December 6, 1995)[1] was an American white supremacist and convicted murderer who was executed by the state of Missouri for the February 1984 murder of Arthur Dade, a 33-year-old black American man.

O'Neal, who was serving a life sentence for the robbery and murder of 78-year-old Ralph Roscoe Sharick, stabbed Dade to death at the Missouri State Penitentiary.

For the latter murder, O'Neal was sentenced to death and executed in 1995 at the Potosi Correctional Center via lethal injection.

[3][4] On July 6, 1979, O'Neal and his accomplice, John E. Boggs, broke into the home of Doctor J. Larry Dowell in Strafford, Missouri.

On August 25, 1979, he was captured in Enid, Oklahoma, after police received a tip from an area truck stop operator.

He was charged with capital murder, first-degree burglary, stealing, and armed criminal action.

[14] On February 3, 1984, at noon, 33-year-old Arthur Dade, a black American man serving a twenty-two-year sentence at the Missouri State Penitentiary for two armed robbery convictions in 1979, was attacked by three white inmates.

[21] O'Neal, Schlup, and Stewart were each charged with capital murder in the killing of Dade.

[24] On December 6, 1995, O'Neal was executed at the Potosi Correctional Center via lethal injection.