Ukraine right now is a textbook case of why 3D printed guns are a positive thing. Print up a militia in a hurry, even behind enemy lines.
I’m not sure the technology is quite there yet but but it’s on its way for sure. I believe the Ukranians should be armed and prepared to defend themselves against tyranny as should everyone. I would not want to see them fall into a civil war however and it seems like that’s a real possibility.