Synonyms of protester

2 Syllables
rebel, strikers, beatnik, striker, swingers, heckler
3 Syllables
dissenters, firebrand, liberals, picketers, militant, dissenter, complainer, complainers, dissident, picketer, objector, objectors, radical
4 Syllables
misbeliever, separatist, agitator
5 Syllables
revolutionist