What I don't understand is the mindset of "Criminals will have guns so we need guns to protect us from them." Rather than trying to take guns out of the hands of criminals (which if we'd have more effective background checks it help, but they oppose that as well), they think that it's better to arm everyone. So they're focused on winning a shootout rather than avoiding a shootout in the first place. Which leads to them bringing up ridiculous suggestions like making sure every teacher is armed.
Christian apologetics is the art of rolling a dog turd in sugar and selling it as a donut.