A friend on facebook (who is in the RCP, regrettably) pulled this quote from Engels. Thoughts on this? Response?

Engels on anarchism:

"The anti-authoritarians demand that the political state be abolished at one stroke, even before the social relations that gave birth to it have been destroyed. They demand that the first act of the social revolution shall be the abolition of authority.

Have these gentlemen ever seen a revolution? A revolution is certainly the most authoritarian thing there is; it is an act whereby one part of the population imposes its will upon the other part by means of rifles, bayonets and cannon, all of which are highly authoritarian means. And the victorious party must maintain its rule by means of the terror which its arms inspire in the reactionaries. Would the Paris Commune have lasted more than a day if it had not used the authority of the armed people against the bourgeoisie? Can't we, on the contrary, blame it for having made too little use of that authority? Therefore, one of two things: either that anti-authoritarians don't know what they are talking about, in which case they are creating nothing but confusion. Or they do know, and in that case they are betraying the cause of the proletariat. In either case they serve only reaction."

burn.