firebrand
noun
[ ˈfʌɪəbrand ]
• a person who is very passionate about a particular cause.
• "a political firebrand"
Similar:
radical,
revolutionary,
troublemaker,
agitator,
rabble-rouser,
demagogue,
soapbox orator,
incendiary,
subversive,
tub-thumper,
• a piece of burning wood.
