agitador

noun
  1. A person who urges others to protest or rebel, often by inciting or stirring up public sentiment. noun
    The agitador was arrested for inciting the crowd to riot.
    She was known as an agitador who could rally people to her cause with passionate speeches.
  2. A device or mechanism that stirs or shakes substances, often used in industrial or laboratory settings. noun
    The washing machine's agitador helps to clean clothes by moving them around in the water.
    In the laboratory, the agitador was used to ensure the solution was thoroughly mixed.