In this compelling Ted Talk, Stacy Mitchell lays out the reasons why buying local -- alone -- will not solve the concentration of power among big box retailers and big banks. As she says, we we can't make the world a better place by being better consumers. This won't change the fundamental fact that we are swimming upstream against a powerful downcurrent of public policies that are taking our economy in the wrong direction. She advocates for pushing changes in public policy that will support local farms, local banks and local infrastructure. It's a powerful argument.