I'm need to find some video of Nelson Mandela that portrays "being the difference". Ideas?

I'm involved in the development of a new website that will really dig into Nelson Mandela's life and passions. I'm currently having trouble looking for a video of Mandela "being the difference" that mattered at the time. In other words, I need to find a video of him when all odds were against him but he prevailed or when he was doing something different than everyone wanted him to and it ended up being the better choice. Any suggestions? Sources? Please?!?!