Synonyms and related words :
Bolshevik, Jacobin, Wobbly, anarchist, anarcho-syndicalist, extreme left-winger, extremist, left-wing extremist, lunatic fringe, mild radical, nihilist, parlor Bolshevik, parlor pink, pink, radical, red, revolutionary, revolutionist, sans-culotte, subversive, syndicalist, ultra, ultraist, yippie