Legal Versus Moral

If you sell an addictive and hazardous product like cigarettes, you may be perfectly within your legal rights, but are your actions morally acceptable? If you sell liquor legally to someone who then kills someone while driving intoxicated, are you culpable for the loss of life? My family made their livings in the liquor business, which undoubtedly led to harm of some people, but I think my parents and grandparents saw themselves as decent people.