In the movie, one of the things that Michael Moore does is travel to K-Mart corporate headquarters with victims of the Columbine shooting. Both of these victims were wounded for life, and both had bullets permanently lodged in their bodies that were sold by K-Mart. This simple act of protest caused K-Mart to stop selling bullets in all of their stores.
Well, now it's Wal-Mart's turn. While I appreciate convenience, I think that Wal-Mart is just a bit too convenient of a place to sell bullets. If you feel the same way too, please sign the petition on the Bowling For Columbine website to get them to stop. Michael Moore will let Wal-Mart know how you feel.