Cancel culture just proved itself more powerful than the devil in Prada herself, Anna Wintour. Years-old tweets you made as a foolish, ignorant teen, and later profusely apologized for, mean you can’t be trusted as editor of . . . Teen Vogue. Alexi McCammond, deemed in 2019 the emerging journalist of the year by the National Association of Black Journalists and supported by Wintour and the rest of top Condé Nast management for the Teen Vogue job, won’t be starting next week as editor-in-chief of the fashion and lifestyle magazine after a staff rebellion over offensive remarks posted in 2011....