activist
noun
[ ˈaktɪvɪst ]
• a person who campaigns to bring about political or social change.
• "activists have been calling for change"
Similar:
campaigner,
reformer,
demonstrator,
champion,
advocate,
promoter,
crusador,
fighter,
battler,
militant,
zealot,
protestor,
radical,
extremist,
netroots,
activist
adjective
• campaigning to bring about political or social change.
• "activist groups around the world are organizing solidarity events"