It's tough. Just keeping up with "trying" to be aware is a full-time stressful job (there's literally only so much time in a day to absorb information, some have less/more). That would be hard even if everything was awesome news all the time in a world so connected.

It helps to realize that it's always been this way, the world is a busy busy place. Everything going on, all the time, never stopping. It doesn't pause, you sleep and the world continues on without you. It's overwhelming, but kinda cool at the same time.

So for me, I take a step back with "mindfulness". It's just a word, but what you're going for is a feeling. For instance, if you've been on here a long time, turn off your screen for a minute and look at your surroundings. Don't let your mind wander back to the screen. Literally give your mind a second to realize you are just existing in a small space. Look at your wall and pick out a detail you haven't seen before, or a tree (anything to let your mind think about something else).

Take some deep breaths or stretch or feel your toes, there's lots of different techniques people use. But, you're going for the disconnected feeling. If you're breathing and still thinking about what's online you gotta refocus to your immediate area. That argument or event is not in your vicinity. You are not helping by stressing out over it. Don't be a fire-fighter who's in a firehouse worried about all the houses catching on fire.

You can compensate your mind's news addiction, by realizing you are better prepared to interact and absorb information online if you're more stable. At some point your cognitive mind is tapped out but you're still scrolling from habit, or you're less likely to get your point across with proper communication if you're not in your best mindset.

By just giving your mind a little room to breathe you'll start figuring out what you want to do with that time. Local organization, hobbies, chores, your mind will try to fill that void with something and you'll be able to hopefully choose something that helps your current overwhelming feeling. Fire-fighters check equipment, play games, shoot the shit, etc. They're still extremely helpful when the time comes.

From recent events I believe online discourse is an important part of society interaction. Look at the media attention over the CEO, instead of just demonizing him, they had to spend time trying to fight all the online support and looked like fools during it.