Claim: Thomas DeSimone was in a gang.
Evidence: Thomas Anthony DeSimone -LRB- May 24 , 1950 -- disappeared January 14 , 1979 -RRB- , also known as Two-Gun Tommy or Tommy D , was a Sicilian-American gangster and associate of the Lucchese crime family in New York City.
A gangster is a criminal who is a member of a gang.