rabble-rouser

Noun

rabble rouser (plural rabble rousers)

1. (idiomatic) Someone or something that tends to inspire mobs; something controversial or provocative.
   • They proceed steadily from studies of human character and destiny, the proper business of the novelist, to mere outpourings of social and economic panaceas, the proper business of leader writers, chautauquas rabble-rousers and hedge politicians.1917, H. L. Mencken, “Joseph Conrad”, in A Book of Prefaces

   Synonyms:

   demagogue