How Cory Booker aims to stand out from a crowded 2020 field

Sen. Cory Booker is just one of 20 Democratic presidential candidates so far. How does he distinguish himself from his robust competition? Judy Woodruff sits down with Booker to discuss his combination of executive and legislative political experience, being pragmatic when it comes to health care and tax policy, confronting American mass incarceration and the need for "courageous empathy."