Lenin: Social-chauvinism and opportunism are the same in their political essence; class collaboration, repudiation of the proletarian dictatorship, rejection of revolutionary action, obeisance to bourgeois legality, non-confidence in the proletariat, and confidence in the bourgeoisie. The political ideas are identical, and so is the political content of their tactics. https://wordsmith.social/protestation/quotes#quote3329