Definition of "bulldozer"
bulldozer
/ˈbʊldoʊzɚ/
noun
plural bulldozers
(historical, chiefly in the plural) A member of a self-identified group of white US Southerners who colluded to influence outcomes of post-Reconstruction elections by intimidating, coercing and bullying black voters and legislators, including burning down houses and churches, flogging and murdering opponents.
(by extension) A bully; an overbearing individual.