I would understand if lynching was considered tabu in US like the N-word for example. But it's not and it never was. As shown at the start the people attacking Trump used the word, the media used the word, the press, movies, popular culture and so on and so forth. Have anyone ever heard of someone getting in trouble for using the word before now?
Come one guys. You know you are stretching when you have to pull out holocaust and such.