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. DAAS professor Scott Ellsworth, a native of Tulsa, talks to Steve Inskeep about the riot.

Below is the link for the NPR Radio interview

http://www.npr.org/2012/04/10/150335245/history-of-tulsas-race-riot