I'm looking for an Anarchist (or Marxist) critique of modern Social-Democracy

I can't think of anything pertaining to modern social democracy specifically, but for a treatment of historical social democracy (and reformism in general) there is always Marx' Critique of the Gotha Program
http://www.marxists.org/archive/marx/works/1875/gotha/index.htm

Bakunin's Critique of the German Social Democratic Program
http://libcom.org/library/a-critique-of-the-german-social-democratic-program-bakunin

Rosa Luxemburg's Reform or Revolution?
http://www.marxists.org/archive/luxemburg/1900/reform-revolution/index.htm

Malatesta on reformism
http://libcom.org/library/reformism-malatesta

and Otto Ruhle's "The Revolution is not a Party Affair"
http://libcom.org/library/the-revolution-is-not-a-party-affair-otto-ruhle

(also see http://libcom.org/search/apachesolr_search/reformism?filters=type%3Alibrary)

A lot of these are very relevant for arguing against contemporary reformist politics as well, but modern social democracy does not even pretend to be applying marxist ideas anymore; criticism of it is essentially criticism of bourgeois politics in general, and you can find that in just about any book advancing anarchist or libertarian marxist ideas.

Pannekoek and Gorter also wrote some good critical stuff on social democracy (mostly German and Dutch). Check on their texts at the Marxists Internet Archive (articles written in the 1910-20 period, mostly). I agree with Vlad that what gets called "social democracy" (or "socialist" in continental Europe) today is far weaker than what was called that 100 years ago, it is really just welfare-state liberalism. They don't even pretend anymore (and haven't for decades) that eventually full nationalization of the economy will lead to the abolition of capitalism.

Im sure Antonio Gramsci wrote alot about this.

http://en.wikipedia.org/wiki/Antonio_Gramsci

I don't have huge problems with any of the suggestions so far, (in fact many of them I like very much!), but the question was *modern* social democracy, and I just wonder if any of these somewhat old works could qualify on that score? I mean, I guess it depends on what the original questioner meant by 'modern social democracy', doesn't it?

I think there is a distinct tendency of social-democratic/labour parties getting 'modern' and dropping a lot of their principles in order to keep up with the times. You could call this 'modern social democracy', I guess, though it does represent a break from the politics of social democracy. I think Aufheben might have written an article or two on the subject a while back...

EDIT: Yeah, here we go. Aufheben gets the goods once again-

Analysis of New Labour 'Workfare' in the UK
social democracy in retreat part 1
social democracy in retreat part 2

~J.

That's the baby.

EDIT: Yeah, we actually submitted those within the same minute. I'm catching up...

~J.