I don't think walmart is evil(or at least not any more evil then any other big company), I might be the only one, but hell it sells products that people buy. Being one of the biggest companies is a biproduct of people buying their products, you can complain that any business is evil, and maybe all are.
They make products that appeal to the common consumer at affordable prices. They don't pay their employees that much, but they pay minimal wage and that is all that is needed by law.
Every big company has went through this, they are evil, and to a point you have to be a little evil. Proctor and Gambel was another company that was said to be evil(maybe for other reasons but evil never the less).
I don't think you can be a nice business person and make money, and when it comes down to it that is what they are trying to do. And the hillbilly sh!t is a moot arguement, since they are the biggest chain, and a lot more then hillbillies buy from them.