If you describe someone involved in politics as an agitator, you disapprove of them because of the trouble they cause in organizing campaigns and protests.
例句
...a famous actress who was accused of being a political agitator.被指控為政治煽動者的著名女演員
英漢詞典釋義
n.
<貶>(尤指政治變革的)鼓動者,煽動者
Mona had watched him grow into an arrogant political agitator.莫娜瞧著他成長為一個高傲的政治鼓動家。