"Citizens that are law-abiding until they don't decide to act otherwise... the you'll have to explain to a widow, a son and a daughter how their father was killed by an EX-law abiding citizen that suddenly made a robbery/drive-by shooting/revenge toward the ex-employer..." I don't think that's a realistic scenario. I could be wrong, but I doubt these nuts who have killed people in the workplace had concealed weapons permits. Besides, there's always going to be maniacs like that in society, who will just steal a gun. If you were to be robbed, or someone broke into your house, wouldn't you feel safer with a gun? Citizens with guns deter crime too. Criminals don't abide by gun laws.