AdvertisementTulsa Searches For Victims Of 1921 Race Massacre At New SiteOctober 19, 2020Brakkton BookerfacebookEmailA second excavation is planned in Tulsa, Okla., this week to unearth potential unmarked mass graves from a race massacre in 1921. In July, researchers began excavation at Oaklawn Cemetery, shown here. They found no evidence of human remains at that particular excavation site. (AP)