Host Matt Frei talks to Democratic political strategist Donna Brazile for her view of the week's top news. The FBI is ready to close more than 100 murder cases committed during the Civil Rights era. Matt talks to special agent Cynthia Deitle about her efforts to close the cold cases, even as some argue not enough has been done to solve them. Americana hears from visionary musician Yo-Yo Ma. The award-winning cellist explains what's distinctly American about music from the melting pot. In San Francisco, California the hottest thing on the block just might be curry. Matt Frei visits local food cart operators to learn more about the trendiest mobile foods and the crowds they draw.