The Black and White Minstrel Show
https://www.bbc.com/historyofthebbc/100-voices/people-nation-empire/make-yourself-at-home/the-black-and-white-minstrel-show
British televised blackface for primetime, in other words. Offensive to blacks back then, and definitively a national disgrace now, it's a wonder the show carried on for as long as it did, the execs of the time even resisting efforts to cancel it amid black outrage.
And now it's happening again, but pushed by the woke brigade as a positive instead. What IS this world coming to?