The making of “The Godfather”

When “The Godfather” opened in March 1972, director Francis Ford Coppola’s drama about a mob family forever changed how we look at gangster films. Correspondent Tracy Smith talks with Coppola, and with stars Robert Duvall, James Caan and Talia Shire, about the making of a classic that, 50 years later, movie lovers still cannot refuse.