By Frederick Dixon: In August I wrote a short piece about the Rotherham child sex grooming scandal, and wondered if at last the left/liberal ice which has kept us in a political and intellectual deep freeze since the sixties was beginning to thaw. As the months go by I become more and more optimistic that the ice age is, at last, drawing to a close; I know that it doesn’t always seem like it when schools can be punished for being too…