Otis Clark, American butler and preacher, survivor of the Tulsa race riot (born 1903)

Otis Clark was one of the last survivors of the May 31, 1921, Tulsa race massacre, considered to be the worst racial massacre in American history. He later worked as a Hollywood butler for movie stars Clark Gable, Charlie Chaplin, and Joan Crawford. Clark's wife lived at the Crawford residence working as the cook for Joan Crawford.

The Tulsa race massacre was a two-day-long white supremacist terrorist massacre that took place in the Greenwood District in Tulsa, Oklahoma, between May 31 and June 1, 1921, when mobs of white residents, some of whom had been appointed as deputies and armed by city government officials, attacked black residents and destroyed homes and businesses. The event is considered one of the worst incidents of racial violence in American history. The attackers burned and destroyed more than 35 square blocks of the neighborhood—at the time, one of the wealthiest black communities in the United States, colloquially known as "Black Wall Street."

May 21 is the 141st day of the year in the Gregorian calendar; 224 days remain until the end of the year.