An argument often used in defense of promoting gun proliferation is that the “good guys” will be armed and will reduce the mayhem done by the “bad guys.” This kind of thinking is so simplistic that I find it remarkable that it requires refuting. Would that the world be so simple that we could just divide humans into good and bad. Maybe we could issue a driver’s license style card to all the “good guys” and then arm them all – problem solved!
Of course I understand that many people believe that there are good and bad people, but I also understand that people can behave well or poorly given different circumstances. Someone who suffers from, let’s say, road rage might use a gun on “that jerk” in a fit of rage with a gun handy. Minutes later, that person would probably be horrified at what he/she had just done. The availability of a gun can, under the “right” circumstances lead to injury or death while otherwise there would just have been cursing and shaking of fists.
Another problem with the concept of good and bad people is that those who commit the greatest atrocities often are completely convinced of their goodness. Witness all the destruction done in the name of religion by people who are convinced that their interpretation of God and faith is the only right one and those who disagree deserve what they get.
There is also the issue of perspective. The same action will appear good to some people and bad to others. I have found that I behave better and have a more integrated ethical stance if I throw out absolutist good vs bad thinking.