"To those of you who do not know. We are joined tonight by Ms. Charity Burbage, who until recently, taught at Hogwarts School of Witchcraft and Wizardry. Her specialty was Muggle Studies. It is Ms. Burbage's belief that Muggles are not so different from us. She would, given her way, have us mate with them. [Bellatrix gags in disgust] To her, the mixture of magical and Muggle blood is not an abomination, but something to be encouraged."
January 1, 1970
https://en.wikiquote.org/wiki/Harry_Potter_and_the_Deathly_Hallows_%E2%80%93_Part_1