I think its a good start. However, you should add in some information on how arming law abiding citizens will not turn your campus into a "wild west" town with bullets flying everywhere. Mention how criminals are opportunistic and will not strike at a place that they perceive to be defended, thus lessening violence by preventing it. I might also not put the fact out there that many students have the CCH permit but can't legally carry on campus. They might twist this to think that people are carrying on campus right now. I would reword it to say something like "There are many law abiding members of this institution that have been permitted to carry concealed weapons. With the rules as they are, these people are left defenseless when they come onto campus."
If you really want to have them start insulting you and throwing hissy fits, ask them what a solution to this complex problem would be that would be effective immediately. Make sure that this solution includes personal responsibility and consequences.