It’s quite the trick to tell a story that is both anti-gun and supportive of stand-your-ground doctrine. I’m almost positive director Brad Bird was going for only one half of that equation in “The Iron Giant” (1999), but I’m going to stand my ground, too. Aside from the deep-thinky pacifist stuff, this stylish piece of children’s animation is the classic story of the (mostly) gentle giant who is (mostly) misunderstood by the townsfolk, government, etc. Except for the kid who befriends him, of course. It all gets magnified through a Cold War paranoia lens and leads to a dramatic climax.