Outrage is addictive and social media only makes this easier: commenting is quick and there's always the urgency to jump on a bandwagon before it disappears.
"Outrage of the Day" is appropriate because what else can fill the mundanity of your life? The trouble is they accumulate and you inevitable form judgements, courtesy to the echo chambers (I'd like to see a new word echosystem!) This also makes it harder to introduce new ideas because the 'right' opinions and argument trees are already set.
I don't see social media as good/bad, but my observation of it is making me wonder if I'm turning into a reluctant Luddite.