However, there remains good reason to believe that a system that makes the legal possession of a weapon in public a rarity serves Maryland well. The presence of a firearm, even in the hands of someone with the best intentions, increases the risk that an ordinary confrontation will turn deadly. Handguns are frequently stolen in robberies and can be turned on their owners or wind up in the hands of criminals. Indeed, that is a primary source for the firearms used in the drug trade. The profusion of handguns in public increases the likelihood that they will be discharged accidentally and injure or kill innocent people. Gun rights advocates fancy that a well armed populace will discourage criminals, but those who would carry concealed weapons legally rarely have the kind of training necessary to use them properly, safely and effectively during violent confrontations. And putting more guns on the street makes it harder for police officers to know who the bad guys are, at best reducing their effectiveness and at worst leading to tragic results.