Go read this infuriating story in Mother Jones:
Walmart's wages and benefits are so low that many of its employees are forced to turn to the government for aid, costing taxpayers between $900,000 and $1.75 million per store, according to a report released last week by congressional Democrats.
... The company also happens to elegantly epitomize the divide between the top and bottom in America: the collective wealth of the six Waltons equals the combined wealth of 48.8 million families on the other end of the economic spectrum. The average Walmart worker making $8.81 per hour would have to work for 7 million years to acquire the Walton family's current wealth.