It is not the same if an insane person enters my home or a school with a pocket knife. And I am thinking at "temporary" insane people, like the ones that after

It is not the same if an insane person enters my home or a school with a pocket knife. And I am thinking at "temporary" insane people, like the ones that after the girlfriend dumps them they go at her work place/home and kill everyone they find including children. Same dude without a gun will do 1-x less damage. But if the citizens decided this is what they want I am not arguing against that. Just feels weird to hear someone say : "beggars will be nicer since they know I might have a gun" but not also consider the reverse "me, my family will have to be more cautios since anyone could have a gun".