The very worst thing Carl Lee did...
...was being an effing terrible marksman. Seriously, wasn't the guy supposed to be a Vietnam vet or something? Just throw the damn rifle up to your shoulder! Realistically the rifle would have been semi-automatic, too. Had he shouldered his rifle like a civilized man and squeezed off a few properly-aimed shots in semi-auto, he wouldn't have shot poor Chris Cooper's leg off and endangered the whole damn courthouse.
Why movies love to show people spraying bullets from the hip is beyond me. Even the mediocre shooters know that's not how you use a rifle.
Check out my action-packed short film, Liberation:
http://youtu.be/E4H0gJ4TwYc