rubicator

Example:He is an instigator, like a rubicator, who encourages riots and chaos.

Definition:a person who incites others to engage in some illegal or disapproved act; one who deliberately starts or promotes a fierce action, controversy, or conflict.

Example:The rubicator was an agitator, often leading to civil discord.

Definition:a person who uses methods of agitation to produce social conflict or widespread public disorder; someone who stirs up great public interest in social or political questions.

Example:She was a placard-waving provocateur, a type of rubicator.

Definition:a person who creates or incites conflict by using provocative means, particularly by waving placards or other symbols of protest or revolution.