If you’re annoyed with someone in a parking lot, it might be smarter to move to another parking place. A dispute over parking at a Birmingham-area Cracker Barrel restaurant Thursday night led to one man shooting another in the head after they argued. It’s hard to imagine that we humans are insane enough that we allow ourselves to get so upset about such trivial disputes that we’re ready to kill someone. I’ve been angry enough to do something stupid, too, so I know what it’s like to feel that way. Most of us need to learn better self-control.