mobocrat

/ˈmɑbəˌkræt/
noun
  1. A person who supports or advocates for rule by a mob or the masses, often in a disorderly or tyrannical way.
    • The novel's villain is a mobocrat who stirs up crowds to overthrow the government.
    • The speaker warned that a mobocrat could rise to power by exploiting public anger.
    • In history, some leaders became mobocrats by encouraging violence among their followers.
Antonyms