Upvoted for reminding me about this. I'm probably due a re-read of 1984 as I'd completely forgotten about the Two Minutes Hate. Orwell really was a visionary.
Two minutes hate is not something new, the difference is just how accesible creating and disseminating such sentiments have become.
And once "the internet" (some nasties behind it) found the way to make these "two minute" increments compound (e.g. YT showing a more extreme version than the one just watched), combined with profiling etc, then boom, CA and FB win elections ;)