One of comments to the article linked above points out that we will go back to the days of the Wild West if people start carrying their loaded guns in holsters around with them wherever they go. While that is partly true, it is also true that in most cases, guns were to be checked at the city limits and not carried into the bars. This, of course, is in total contrast to the romanticized movies we have seen and that I grew up watching. But if we believe what we see in these movies, then, yes, people who have gripes with other people will be able to simply draw their guns and take care of the matter quick and dirty. Who will be in the cross fire? How many innocent people will be killed needlessly? Cho was seriously mentally ill and had been carrying anger and destructive thoughts for years. His answer to it all was to shoot innocent people and take his own life.
Dylan Klebold and Eric Harris, the Columbine shooters, were angry, apparently, with fellow students who were more popular or who rejected and supposedly bullied them. Bullying is not to be tolerated. Neither is the response that has happened far too often in our country- to shoot those who you preceive to have caused you pain and suffering. Mental illness, faulty thinking, anger, domestic abuse, bullying, retaliation, drugs and alcohol, and other things have led to way too many shootings of innocent people. Guns are the easy answer, the shooter thinks. Guns will solve the problem. Shooting someone will eliminate the problem. In Minnesota, in the last 4 days, 3 people died from gun injuries and one police officer wounded in domestic disputes. The latest happened in the middle of the morning on a crowded street in suburban Minneapolis. The anger and convoluted thought processes that led to this can only be guessed at by those of us who choose not to have guns at the ready just in case. But when a gun is available, tragedy happens even though the shooter may express regret after the event. It's too late. A trigger can be pulled in less than a second. Death and life long injuries happen in an instant. The damage is done. Families and friends grieve. The shooter goes to prison or, in many cases, commits suicide and so cannot be held responsible for the awful pain and suffering that happens after a shooting.
Thus, we have these anniversaries of shootings. There are way too many of them. In what other country not at war do we suffer through yearly remembrances of lives lost?