Instructors teach people how to use guns every day. Some of these people go on to kill people and commit crimes, but no one would suggest you prosecute the fire

Instructors teach people how to use guns every day. Some of these people go on to kill people and commit crimes, but no one would suggest you prosecute the firearms instructors. Unless the students being taught told the instructors in advance that they were going to use the education to kill people and commit crimes, which is exactly what happened here. That being said, I agree with everything else you said.