Claim: Jeffrey Dahmer was an American serial killer.
Evidence: Jeffrey Lionel Dahmer -LRB- May 21 , 1960 -- November 28 , 1994 -RRB- , also known as the Milwaukee Cannibal , was an American serial killer and sex offender , who committed the rape , murder , and dismemberment of seventeen men and boys between 1978 and 1991.