I read a book about these guys a while back - can't remember
the title. Supposedly the Sean Penn/Gary Oldman flick
"State of Grace" was based on them, their gang, etc.
The book was *The Westies* by T. J. English; it was not the basis for
the Sean Penn movie. Roy Demeo, a psychopath, headed up a large-scale
stolen car ring for the Mafia's Gambino Family and also carried out a
number (estimates run into the dozens) of killings. He had some
connections to the Westies, some of whose members worked for him in
stealing cars or killing people. It is not accurate to say that the
Westies *terrorized New York.* Their power base was relatively small,
in the old Irish neighborhood in the Hell's Kitchen area of Manhattan,
on the lower West Side waterfront along the Hudson River. They scared
the hell out of people in that neighborhood, but had no influence
anywhere else in the city.
Ernest Volkman, author *Goombata: The Improbable Rise and Fall of John
Gotti and His Gang,* etc.