Why is it not racist when it's directed at white people?

This is the title of a popular Facebook page, which frustratingly permits no comments on its wall - I wonder why?

It poses a very interesting and relevant question. Here is my suggested answer:

It is because it is only necessary for the state to intimidate the white majority into denying or condemning any stirrings of a shared ethnic European identity, in preemptive defense of the false claim to nationhood, on which it bases the legitimacy of its power and control over (American/British) society as a whole.