Question: During which incident of racial violence was the Mount Zion Baptist Church burned down?
Sentence (from "Tulsa race riot"): The Tulsa race riot, or Tulsa race riot of 1921, occurred between May 31 and June 1, 1921, when a white mob started attacking residents and businesses of the African-American community of Greenwood in Tulsa, Oklahoma, in what is considered one of the worst incidents of racial violence in the history of the United States.
Relevant evidence: Yes