William L. Patterson

William L. Patterson (August 27, 1891 – March 5, 1980) was an African-American leader in the Communist Party USA and head of the International Labor Defense, a group that offered legal representation to communists, trade unionists, and African Americans in cases involving issues of political or racial persecution.
On August 22, 1927, he was among the 156 persons arrested for protesting the execution of immigrants Nicola Sacco and Bartolomeo Vanzetti, who were anarchists.
Patterson was active in the Civil Rights Congress, which succeeded the ILD. In 1951 he presented the document, We Charge Genocide, to the United Nations, charging the U.S. federal government with complicity in genocide for failing to pass legislation or prosecute persons responsible for lynching in the United States, of which most of the victims were black men.

In 1911 Patterson was the first African-American graduate of Tamalpais High School, in Mill Valley, California. In the yearbook, his stated ambition was "to be a second Booker T. Washington."

Patterson became involved in leftist politics after earning his law degree. He joined protests in Boston against the execution of Sacco and Vanzetti, immigrant anarchists convicted of subversion. He joined the Communist Party USA for a period. Through that, he became head of the International Labor Defense, an organization to represent leftists and African Americans seeking justice in the United States.

He married Louise Thompson in the 1930s. A writer, she had a long association with the poet Langston Hughes, and they collaborated on a proposal for a documentary about Harlem culture.

Patterson died in 1980.

• Civil Rights Congress (1970). William L. Patterson, ed. We Charge Genocide: The Historic Petition to the United Nations for Relief from a Crime of the United States Government against the Negro People. New York: International Publishers. p. 238. Retrieved February 9, 2010. 
• Patterson, William L. (1967). Ben Davis : crusader for Negro freedom and socialism. Chronology & bibliography by Oakley C. Johnson. New York: New Outlook. p. 48. OCLC 1146470. 
• Patterson, William L. (1971). The Man Who Cried Genocide: An Autobiography. New York: International Publishers. p. 233. OCLC 132403. Retrieved February 9, 2010. 
• Patterson, William (December 22, 1936). "Revolutionäre Negerlieder anlässlich der Paul Robeson Konzerte", Deutsche Zentral Zeitung

• Sheila Tully Boyle, Andrew Bunie, Paul Robeson: The Years of Promise and Achievement Sheridan Books (2001), p. 485, see footnote 23. Retrieved December 6, 2011