The best example is that right after the holocaust and "never that again", half of the western political spectrum turned a blind eye to the various genocides and crimes against humanity happening in the communist block. Clearly no lesson was learnt. The two great totalitarian ideologies of the XX century have a lot in common. These laws that target one but ignore the other are I think at best misguided if not cynical. The French equivalent of those laws was proposed by the French communist party...
