agitator -
One who agitates; one who stirs up or excites others; as, political reformers and agitators.
agitator -
An implement for shaking or mixing.
agitator -
One of a body of men appointed by the army, in Cromwell's time, to look after their interests; called also adjutators.
Wikipedia
An agitator is a person who actively supports some ideology or movement with speeches and especially actions. The Agitators were a political movement and elected representatives of soldiers, including the New Model Army of Oliver Cromwell, during the English Civil War. They were also known as adjutators.
OmegaWiki Dictionary
Ω
agitator Someone who agitates or calls for a certain behavior; a troublemaker.