While it never does harm to point out that gender, nation or ethnicity or race are social constructs, it is naïve, even dangerous, to suppose and suggest that one only has to ‘deconstruct’ these social artefacts, in a purely performative celebration of ‘resistance’, in order to destroy them. It amounts to ignoring that, while categorization by sex, race or nation is indeed a sexist, racist or nationalist ‘invention’, it is inscribed in the objectivity of institutions, that is to say, of things and bodies. As Max Weber pointed out long ago, there is no greater threat to a workers’ movement, or any other, than ‘objectives rooted in misrecognition of real relationships’. And one may in any case doubt the reality of a resistance which ignores the resistance of ‘reality’.