Going back several months to the biased story from which you are getting your half-information, some Wal-Mart employees who have not completed the probationary period required to qualify for full benefits may resort to public assistance, JUST LIKE EMPLOYEES OF ANY OTHER COMPANY.
Just like employees of other companies, when they have fulfilled the probationary period they get full benefits.
It just so happens that in many states (21 to be exact) Wal-Mart is the state's largest employer, therefore it should come as no surprise, that Wal-Mart might have the most probationary employees collecting some sort of public assistance in those states.
But don't let facts stand in the way of your prejudices.
I sometimes shop at the Issaquah store. I also have a Sam's card and I shop Wal-Mart also. Sam's is more blue collar.