As depressing as this may be - we're talking about the legal system so ethical standards aren't really relevant. America (and well, everywhere mostly) has hist

As depressing as this may be - we're talking about the legal system so ethical standards aren't really relevant. America (and well, everywhere mostly) has historically had a lot of extremely unethical laws. Currently on the ground most weapon sales don't require extensive background checks which frees the seller of any legal liability - it is illegal to sell a gun to a dangerous person, but it's not illegal to clamp your hands over your eyes and ears and never run a background check in the first place... thus, legally, remaining ignorant of the individual's fitness to own a firearm. This is an extremely divisive topic in America so I'd really just suggest avoiding any gun or self-defense related analogies whenever possible.