Scott Ellsworth, historian of '21 riot, interviewed on NPR about Tulsa race relations

Police are still investigating whether the weekend shooting spree in Tulsa, Okla., was racially motivated. A massive riot there in 1921 left about three dozen people dead. University of Michigan history professor Scott Ellsworth, a native of Tulsa, talks to Steve Inskeep about the riot. [CLICK ON THE LINK FOR FULL AUDIO]