This sentence struck me too, for a couple of different reasons.
First, it tacitly acknowledges that there indeed is a right to bear arms.
Second, it is a very peculiar argument. It suggests that if a right is not the most important right, it's not worth fighting for. By this logic, you could strip the bill of rights down to one amendment.
An English teacher should put more thought into his writing.
This sentence struck me too, for a couple of different reasons.
And of course it also begs the question: if your other rights are attacked after you're disarmed, what are you going to protect them with? Spitballs?