It is the person and not the gun.

For people, who use motor vehicles, to inflict death & physical injuries, should we ban all motor vehicles?

For people who use edged weapons & blunt trauma weapons, should we ban all edged weapons & blunt trauma weapons?

For people who kill people, no matter what their jobs & intent, should we ban all medical personnel, who couldn’t save a patient?  After all, medical personnel do not save everyone.