The Tulsa Race Massacre of 1921 is one of American's most unknown racist tragedies. Over two days, fires raged in the Oklahoma city's predominately black Greenwood District, destroying the African American base of the city.
By the end of it, 35 square blocks were destroyed, as many as 300 people were killed and another 800 people were injured. No arrests were made.
Though one of the biggest tragedies in American history, the events of 1921 are largely unknown to many, including to people who grew up in Tulsa. The disparity in knowledge was displayed on the latest episode of "Race in America: A Candid Conversation" when NBC Sports' Kelenna Azubuike and 9-year NBA veteran Etan Thomas, both Tulsa natives, revealed when they first learned of the tragedy.