Thingiverse has a big discussion going on about whether they should allow weapon designs to be posted. Commenters have come down on both sides of the issue, with some suggesting an age- or location-based filter.
And then along comes commenter paul, who says
My sense is that the weapon designs are there not so much for printing (they’re way huge for ordinary machines and wouldn’t work in common media) or even study but as political statements. So I don’t really have a problem with a decision to restrict them.
Apparently paul is just fine with restricting speech he doesn’t like.
Unfortunately for him, homemade weapons are actually not that hard to make.
You can’t uninvent the gun.