| brawler |
| campaigner(insurgent, protester, objector) |
| causes trouble(noun, expression, radical, reactionary, leftist) |
| champion(radical, partisan, reactionary, leftist, malcontent) |
| criminal syndicalist |
| defiant(adjective, riotous, rebellious) |
| deserter(resistance, rebel, recreant, insurgent, protester) |
| disectarian(resistance, rebel, recreant, insurgent, protester) |
| disorderly(adjective, riotous, rebellious) |
| disrupter(radical, partisan, reactionary, leftist, malcontent) |
| dissident(radical, partisan, reactionary, leftist, malcontent) |
| dogmatist(radical, partisan, reactionary, leftist, malcontent) |
| experientialist(resistance, rebel, recreant, insurgent, protester) |
| experimenter(resistance, rebel, recreant, insurgent, protester) |
| extreme left-winger |
| fanatic |
| fighter(radical, partisan, reactionary, leftist, malcontent) |
| firebrand(noun, radical, rebel, progressive, revolutionary) |
| fomenter(radical, partisan, reactionary, leftist, malcontent) |
| heretic(resistance, radical, recreant, reactionary, insurgent) |