Now it's criticising relativity. Key quote:
The theory of relativity is a mathematical system that allows no exceptions. It is heavily promoted by liberals who like its encouragement of relativism and its tendency to mislead people in how they view the world.
The "Volokh Conspiracy" (which is basically a US intelligent,right-of-centre/ libertarian blog, concentrating on legal issues) has a very readable set of comments on the issue here.
Let's hope this kind of stuff is kept out of UK schools, eh?