The history and importance of Jackie Robinson Day

It's Jackie Robinson Day around Major League Baseball. It marks the day when Robinson broke the color barrier in baseball 79 years ago today for the Brooklyn Dodgers. All players, coaches, and managers will wear Robinson's No. 42 for all of the major league games as they have done on each Jackie Robinson Day since 2009. MLB's official historian John Thorn joins L.A.'s Morning News to talk about it.