College Campuses Are Not Gun-Free Zones
Wishing for something to be true does not make it true. Declaring an area to be gun-free is wishful thinking. We know campuses are not gun-free zones from the news reports of campus shootings.
Declaring an area to be a gun-free zone discourages law-abiding citizens from carrying guns there, but it encourages people who intend to commit crimes with firearms because it gives them some assurance they will not meet with armed resistance from law-abiding citizens.
Even the most dim-witted among us can surely see that such a declaration invites criminals to engage in firearm-related crimes in an area where they know law-abiding citizens will not shoot back. This could be mass shootings, robberies, rape, or any crime in which an armed criminal wants more assurance of having the upper hand. Criminals, by definition, do not obey the law.
Declaring an area to be a gun-free zone makes it more likely that a gun crime will occur there.
The argument in favor of declaring an area a gun-free zone is that despite the news reports, mass shootings and other gun crimes are relatively rare, and there is a bigger risk of accidental harm from the actions of law abiding citizens than from criminals. The benefit from preventing accidents by law-abiding citizens outweighs the increased risk of gun crimes that gun-free zones encourage.
The only reasonable argument in favor of gun-free zones is that the threat from armed law-abiding citizens is greater than from armed criminals.