A Milwaukee County District judge has given a 33-year-old man found guilty of murder a life sentence.  Derrick Williams would be eligible to seek supervised release after he serves 33 years.  Williams was convicted of using a baseball bat to beat gas station clerk Harjinder Singh to death last January.  Witnesses say Singh chase Williams out of the store waving that bat, then threw it at him.  Williams then picked up the bar and attacked the clerk.