V.I. Lenin, 1915, "The Conference of
the R.S.D.L.P. Group Abroad"

"Certain strata of the working class 
(the bureaucracy of the labour 
movement and the labour aristocracy, 
who get a fraction of the profits from 
the exploitation of the colonies and 
from the privileged position of 
their "fatherlands" in the world 
market), as well as petty-bourgeois 
sympathisers within the socialist 
parties, have proved the social 
mainstay of these tendencies and 
channels of bourgeois influence over 
the proletariat. 

"The baneful influence of opportunism 
has made itself felt most strongly in 
the policies of most of the 
official Social-Democratic parties of 
the Second International during the 
war. Voting for war credits, 
participation in governments, the 
policy of a class truce, the 
repudiation of an illegal organisation 
when legality has been rescinded -- 
all this is a violation of the 
International's most important 
decisions, and a 
downright betrayal of socialism."

[MC5 notes: See how Lenin 
distinguishes between the labor 
bureaucracy and the labor aristocracy 
already in 1915.]