Remembering Lady Bird’s whistle-stop tour for civil rights

Fifty years ago, in October 1964, less than a month before the presidential elections, Lady Bird Johnson boarded a train in Washington to stump through eight Southern states -- a gamble to help win back disaffected voters after the passage of the Civil Rights Act. Judy Woodruff explores a lesser-known part of the legislation’s history with a look at the first lady’s influential whistle-stop tour.