Active resistance - Dennis Dalton

The concept of active resistance to oppression has a long history. Does it work? Has it ever really worked in the past? It's a real question right now as the masses of Egypt try to find a non-violent way of removing the Mubarak regime. We speak to Dennis Dalton, a past professor of political science at Columbia University and authority on non-violence and the life and philosophy of Mahatma Ghandi.