It's really simple. The more you shop at Wal*Mart, the sooner you'll be working there. They're killing American manufacturing, which depletes jobs and drives down wages. They undercut prices until they kill the immediate competition and then raise them back up. They encourage their employees to file for and live on state aid, one of the many ways the government subsidizes Wal*Mart.
Need more? Go here:
http://remjte.livejournal.com/437357.html#cutid1