Vladimir Ilyich Lenin. Childhood disease "leftism" in communism (№ 394111)

To be able to help "the masses" and to win the sympathy, the empathy, the support of the "masses", we must not be afraid of difficulties, not afraid of NIT-picking, foot pegs, insults, persecution from the "leaders" (who, being opportunists and social-chauvinists, are in most cases directly or indirectly connected with the bourgeoisie and the police) and be sure to work where there are lots. You should be able to bring any sacrifice, to overcome the greatest obstacles to systematically, persistently, persistently, patiently to promote and campaign precisely in those institutions, societies, unions, at least the most that neither is the reaction, where is the proletarian or proproetary mass. And the trade unions and worker cooperatives (the latter sometimes, at least) is exactly such an organization, where there are plenty.