Michael Sandel: What's the right thing to do?

Summary:
Imagine you're in a trolley car and you are imminently going to hit five workers working on the track. However there's a side lane with only one worker working on the track? Would you under conscious action switch lanes and kill the one worker or would you stay on path and kill the five workers? What would you have done? Would your action constitutes to murder?

An interesting talk from Harvard Law by Michael Sandel. I know it's a rather lengthy video but it's good. Much much better that my summary. Trust me.