What reason does anyone have to possess a firearm? What reason does a black person have in not wanting to be relegated to separate but "equal" facilities? Economically speaking, prohibition causes crime. First, it makes what would otherwise be legal, illegal. Second, it creates an economy void of the protections (courts and manners of redress between two parties in an economic transaction) that facilitate an organized and civil society. Three, it creates both scarcity and demand, which, in turn, cause prices to rise and the ensuing crime to acquire the ability to pay the higher prices for the good being demanded.