Yeah, you should sell out now. Once the inevitable economic crisis occurs, you should then buy the dip.
Your own individual stock ownership is a drop in the bucket compared to larger wealth management firms. If you feel like it's a moral obligation, go for it, but it won't impact the American economy any harder than Trump already will. You're a pebble against an avalanche.
It would be the equivalent of a global bank run. It would be a significant event, but if your only goal is causing the U.S. further economic damage, I think the best way is contacting your local democratically elected representative and recommending more and harsher retaliatory tariffs.