i Register
In some senses, agitator is marked as historical. Watch for register when choosing this word.
noun
One who agitates; one who stirs up or excites others, for example political reformers.
Near-synonyms: instigator; see also Thesaurus:troublemaker
In addition, they kept a watch on political agitators and foreigners arriving and departing at the port.
An implement for shaking or mixing.
One of a body of men appointed by the army, in Oliver Cromwell's time, to look after their interests.