agitator
noun
[ ˈadʒɪteɪtə ]
• a person who urges others to protest or rebel.
• "a political agitator"
Similar:
troublemaker,
rabble-rouser,
demagogue,
soapbox orator,
incendiary,
revolutionary,
firebrand,
rebel,
insurgent,
revolutionist,
subversive,
instigator,
inciter,
provoker,
fomenter,
dissentient,
agent provocateur,
stirrer,
• an apparatus for stirring liquid.