The Collaborative International Dictionary of English v.0.48:

Bulldoze \Bull"doze`\, v. t. [imp. & p. p. Bulldozed; p. pr. &
   vb. n. Bulldozing.]
   To intimidate; to restrain or coerce by intimidation or
   violence; -- used originally of the intimidation of negro
   voters, in Louisiana. [Slang, U.S.]
   [1913 Webster]