"Silence," said Voldemort, with another twitch of his wand, and Charity fell silent as if gagged. "Not content with corrupting and polluting the minds of Wizarding children, last week Professor Burbage wrote an impassioned defense of Mudbloods in the Daily Prophet. Wizards, she says, must accept these thieves of their knowledge and magic. The dwindling of the purebloods is, says Professor Burbage, a most desirable circumstance ... She would have us all mate with Muggles ... or, no doubt, werewolves ..."