Clinton challenges grads to do their part in world

Former President Bill Clinton challenged University of Michigan graduates to do their part in a world marred by inequality and insecurity.

Speaking to 6,500 graduates at the school's spring commencement in Ann Arbor, Clinton punctuated his 23-minute speech with bits of humor while stressing community and responsibility.

"Think about how you are going to define your citizenship of your nation, community and the world, and how you will reconcile that with your different identities," Clinton said.

An estimated 59,000 people filled more than half the seats in Michigan Stadium. While Clinton mostly avoided politics in his address, several students wore graduation caps with "end the war" written or taped on top.