Why would twitter delete it? I can understand why twitter wouldn’t want any Americans to see or hear the voiceover, but delete it?
It's right straight out of 1984.
Control and scrub the record of things you don't want (including people) and just like magic, it didn't happen at all.
Twitter just made it an UNspeech.
Next step, if they can pull it off, is make Trump (and anyone voted for him) an UNperson.
There was a very minor, like one or 2 second copyright infringement. Of course there was a complaint & delete.