Bone Saws aren't banned either, and retinal eye-scans of assassins will not make the world a safer place.

Having Humanist-Centric politics makes the world a better place. Humans with shitty governments, parenting and environments which are shitty typically wind up being shitty humans.

Building walls, guns, bombs, cages, cops, totalitarian and authoritarian regimes are no substitute for actually working to be better humans

I agree but you can't realistically build policy around "working to be better humans". Walls, guns, surveillance, etc are all easily deployable policies with easily measurable results. I don't enjoy the surveillance state or waiting 2 hours for airport security but it is tolerable...to an extent.