In fact, the propaganda war against Walmart is nothing more than a union campaign to get dues from a million new members, dues that can be dumped into the pockets of fat union bosses and their dem political hacks. The ultra-left wing, especially in the baby-killer-blue states, wants workers enslaved by unions and works to help unions at Walmart. It is a big target in terms of potential for dues money and high paying jobs with no work for union stewards.
You're correct when you point out that the leadership of organized labor leaves a lot to be desired. But someone has to keep corporate America honest.