The Occupant: A Charade

My first is a boss in the mob.
My second's a senile slob.
My third is a trick meretricious.
My whole is both racist and vicious.

(Somewhat more of a stretch)

My first is the place thieves call home.
My second's revoltingly ailing.
My third denotes vagrants who roam.
My entire is ready for jailing.

This is part of the collection Verses for the Information Age by Ernest Davis