Wal-Mart's groceries are the cheapest of any grocery store in the area where I live. In addition to groceries, I buy socks, underwear, motor oil, and other things there because they are cheaper than the alternatives. How is that "useless crap"?
Here's the useless crap I had in mind:
http://www.walmart.com/catalog/product.do?product_id=3933953
http://www.walmart.com/catalog/product.do?product_id=3913741&cat=91849&type=1&dept=4044&path=0%3A4044%3A103150%3A97116%3A91849
http://www.walmart.com/catalog/product.do?product_id=3302133&cat=133113&type=1&dept=4044&path=0%3A4044%3A133012%3A133113
Certainly Walmart sells at better prices than others the necessities of life, such as foodstuffs. A Walmart supercenter recently opened in our town and we've now started grocery shopping there and are saving money as a result.
But Walmart also offers useless junk at such reasonable prices that people feel compelled to buy it whether they need it or not. I'm not suggesting this is Walmart's fault, but I suspect that my family is not alone in buying useless crap from Walmart. And I further suspect that some portion of these people probably spend enough of their income at Walmart buying useless crap that it puts them in financial straits. Again, not Walmart's fault.
But here we have a CEO of a company suggesting that the federal government raise the minimum wage. I don't know what Walmart pays its employees, but certainly he is entitled to raise his company's wages. But why should other small business owners be forced to pay more just because Walmart's CEO thinks they should?