A big stink about Cho was that he did actually lawfully purchase his firearms. I remeber thinking the day it happened, deep down,that he was even more of a bastard for doing so. That being said,his actions with sad firearms were not lawful, so why would a silly ban stop him? I'm sure it wouldn't have been TOO hard to him to have illegally find firearms,or weapons on the street as well.
I am so sick of stricter laws, I really do wish more people would step up and take action against regulation our rights.