Vietnam celebrates 50th anniversary of the fall of Saigon

Fifty years ago on Wednesday, the fall of Saigon on April 30, 1975, marked the end of the Vietnam War. Most Americans remember is as one of the longest and most-unpopular conflicts in US history. But in Vietnam, the anniversary is being celebrated as the end of a much-longer struggle for liberation, one that predates US involvement by several decades. The World's Matthew Bell reports.