Yes, a lot of the news is sensationalized and blown out of proportion.
But also YES, things are absolutely trending in the wrong direction and you should both be aware of that and be loudly screaming about it. Going to protests, boycotting companies run by these CEOs leading us into oligarchy, and letting people know your stance.
The idea that "I can't do anything about it, so I'll just bury my head in the sand" is the rhetoric that the people benefitting from rigging the system want you to have. It makes it easier for them to screw you over.
No, your brain was neven designed for this much bad news. It also wasn't designed for the Internet, tv, smartphones, processed food, soda, painting, sleeping in a bed, to infinity. It's a garbage argument that falls apart at first glance.
Edit to add: I highly recommend meditation and days off from technology. But the answer is not what many people in this thread are proposing. Steve Bannon's "flood the zone" strategy is winning.