Activist – a person who uses or supports strong actions (such as public protests) in support of or opposition to one side of a controversial issue. Example: The activists protested the government’s new immigration policies. Radical – a person who advocates thorough or complete political or social reform. Example: Francis is the most radical pope in modern memory. Advocating – supporting or or recomending in favor of a person or cause. Example: The Senator was advocating for free health care.