+1 for digging holes
I have a few things I do, especially because people are getting madder both online at each other and in person. I am super sensitive emotionally which is awful for dealing with news, social media, road rage, etc.
What helps me most is trying to do something that helps the local people around me directly. I go through my house and make a free pile in the front yard almost once per week for anyone to come take what they need at no cost. I don't care if they sell the stuff, they need the money more than I do. I sell items on eBay and get things from house clear outs so I'm starting to put extras out for free instead of funneling them through goodwill. 99% of the items are gone by the end of the day. Clothing is always gone. People are definitely in need. Food items and decor also go.
I also try to be actively nicer in public on a daily basis. Making sure to pay compliments I would otherwise maybe not say, or helping someone with a heavy bag etc. I had an elderly lady help me with carrying my multiple bags to my car one day and I still get good feelings from it. I think I get stuck in being quiet and "just getting through it" when a little kindness to others would go a long way for both them and me.
I also reduce or disable social media apps entirely. They are addictive and meant to exploit anger for the attention economy. I'm still trying to figure out how to navigate having a feeling of community without it. But moderated forums like permies certainly help!
Playing physical DVDs of comfort shows/movies in the background without ads or tracking from nefarious companies also helps.
Lastly I try to do things I CAN control. I finish some sewing repairs, clean the chicken coop, visit with my animals, batch cook some food for later, do small fixes or cleaning to the house etc.
It's still pretty awful out there but you're definitely not alone in your feelings. Sending care your way.