The Olympic Torch: Down and Out in Paris and London

What was started by Hitler's Nazi regime at the 1936 Olympics has morphed into an international symbol of unity and good will. This year's Olympic torch will be carried 85,000 miles by hundreds of people who have competed for the honor. But today in Paris, the torch had to be extinguished four times and the city cancelled its welcoming ceremony after protesters disrupted the torch's 18-mile journey, which started at the Eiffel Tower. San Francisco, where hundreds of police officers will be in the street, is gritting its teeth for the torch's arrival on Wednesday. We hear about the protests in Paris from Charles Bremner of  the Times of London, and get a preview of San Francisco's preparations from Wyatt Buchanan of the San Francisco Chronicle.