Liberals and conservatives do not agree with each other, as a matter of general principle. If one side says something is true, then the other side will try hard to prove it isn't, just to show them. So it is nice to see liberals come around on a point conservatives have been making for decades: Welfare leads to moral rot.
What happened? As A. Barton Hinkle explains, the battle over Walmart has taught American liberals a lesson in basic economics.