When ten-guinea shoes fall apart and you can't get satisfaction; when a new car is delivered rusty and nobody seems to care; when supermarket bargains seem less than value for money; who can you go to, who will fight your cause? Ralph Nader is the champion of consumer causes in America. Do we need somebody like him in this country today? In the second of two Man Alive programmes Ralph Nader himself debates consumer protection with MPs, manufacturers, shopkeepers, those who already work on the consumer's behalf and the people themselves who feel in need of protection