China Unrest Has Roots In History [podcast 3 min 45 sec]

This week's deadly clashes in Xinjiang province between ethnic Uighurs and China's majority Han are rooted in tensions that go back more than two centuries, an expert on the Uighurs says.

"Since the 1750s, essentially, there has been almost constant tension between the two groups," Sean Roberts, director of International Development Studies at George Washington University, tells Robert Siegel.