Bohemian
Bolshevik
Jacobin
Wobbly
anarchist
anarcho-syndicalist
beatnik
deviant
dissenter
dropout
extreme left-winger
extremist
flower child
freak
heretic
hippie
left-wing extremist
lunatic fringe
maverick
mild radical
misfit
nihilist
nonconformist
nonjuror
original
parlor Bolshevik
parlor pink
pink
pinko
radical
red
revolutionary
revolutionist
sans-culotte
sectarian
sectary
subversive
swinger
syndicalist
ugly duckling
ultra
ultraist
unconformist