[...] You can tell that the capitalist system is in trouble when people start talking about capitalism. It indicates that the system has ceased to be as natural as the air we breathe, can be seen instead as the historically rather recent phenomenon that it is. Moreover, whatever was born can always die, which is why social systems like to present themselves as immortal. [...] Marx unmasked our everyday life to reveal an imperceptible entity known as the capitalist mode of production.

I am not of that leftist breed that piously proclaims that everything is open to criticism, and then, when asked to produce three major criticisms of Marx, lapses into truculent silence.