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.
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 ;)