These people have become paralyzed and unable to function normally. They allow world events to bleed into every conversation, and feel obligated to support their side and ostracizing anyone that disagrees - further isolating them in their bubble.
I think that social media has increased society's emotional surface area to world events. We no longer isolate 30-60 minutes per day to watch balanced reports on the 6 o'clock news - now it's all the time, hyperbolic, and often deceptive.
Our emotions are being weaponized - and November is going to be a real wake-up call where we will see the magnitude of disruptive power that these polarized social media messages can wield.