Oh, please. Walmart didn't "destroy" small communities. They did introduce some competition though.
And let's not act like Walmart came out of nowhere and sucked the life out of independent mom-and-pops. They're in mid-sized towns and small cities, and there were plenty of stores like Walmart before them. Before Walmart, it was Kmart. Before Kmart, it was Hills, Ames, Jamesway, and countless others in the 20th century that came and went.
Dollar General is much more of a small-town vulture than Walmart is.