Notorious Marylanders

Who is among the worst people that were from YOUR home state?  Oregon would say Hitler since he was born there before emigrating to Austria as an infant.  (a little known tidbit of history that few people know.)

As for Maryland we have:

SCOTUS Justice Roger Taney
John Wilkes Booth
Algier Hiss
If your are a chicken, Frank Purdue
If you are a human Rachel Carson
David Hasselhof