http://hosted.ap.org/dynamic/stories/A/AS_CHINA_KNIFE_ATTACK?SITE=AP&SECTION=HOME&TEMPLATE=DEFAULT&CTIME=2012-08-02-06-05-46
Rather than banning knives the federal government might want to come up with rules and regulations to protect us against sharp objects in general.
We could first fund studies at a public university or two.
Then we could hire some additional public servants to enforce the regulations put in place to protect us from this menace.
It will be a win-win situation. The government will have solved another problem for us while at the same time creating more worthwhile jobs.
We may need to confiscate privately held knife sharpeners but who could fault that? It just means more jobs for government knife confiscators.