The history of what we now call opportunity zones

The 2017 tax cut in the US included a provision that would forgive capital gains taxes, if invested for ten years in an "opportunity zone" — a low-income area designated by a state governor. But the idea of encouraging investments in poor and mostly black areas has a long history. We talk to Mehrsa Baradaran, a law professor at the University of Georgia and Andrew Schrank, a sociologist at Brown University.