Other hyponyms of social reformer include
abolitionist,
emancipationist,
birth-control campaigner,
birth-control reformer,
Chartist,
civil rights activist,
civil rights leader,
civil rights worker,
demonstrator,
protester,
dry,
conservationist,
environmentalist,
feminist,
libber,
women's liberationist,
women's rightist,
flower child,
hippie,
hippy,
hipster,
freedom fighter,
insurgent,
insurrectionist,
rebel,
activist,
militant,
non-resistant,
passive resister,
preservationist,
Utopian.