First you should take a poll. I bet it will show the majority of parents will refuse to send their kids to schools that have armed civilians.

Second I trust me with a gun much more than I trust you with a gun. You OK with only me having a gun to protect your kids? I promise there will be no accidents and I'll try to protect you too. I just don't want to have to worry about you having a gun when it hits the fan.

We've all been behind that guy yacking on his cell phone driving all over the road. If you were to ask him he'd swear he's the safest driver out there.