The Washington race riot of 1919 was civil unrest in Washington, D.C. from July 19, 1919, to July 24, 1919. Starting July 19, white men, many in the United States Army, United States Navy, and United States Marine Corps, responded to the rumored arrest of a black man for rape of a white woman with four days of mob violence against black individuals and businesses. They rioted, randomly beat black people on the street, and pulled others off streetcars for attacks.

In 1919, noted African-American author James Weldon Johnson would write a short 7-page account of the riot titled, "The Washington Riots."

When police refused to intervene, the black population fought back. The city closed saloons and theaters to discourage assemblies. Meanwhile, the four white-owned local papers, including the Washington Post, fanned the violence with incendiary headlines and calling in at least one instance for mobilization of a "clean-up" operation. After four days of police inaction, President Woodrow Wilson ordered 2,000 federal troops to regain control in the nation's capital. But a violent summer rainstorm had more of a dampening effect. When the violence ended, people had died: at least 10 white people, including two police officers; and around 5 black people. Fifty people were seriously wounded and another 100 less severely wounded. It was one of the few times in 20th-century riots of whites against blacks that white fatalities outnumbered those of black people. The unrest was also one of the Red Summer riots in America.

James Weldon Johnson (June 17, 1871 – June 26, 1938) was an American writer and civil rights activist. He was married to civil rights activist Grace Nail Johnson. Johnson was a leader of the National Association for the Advancement of Colored People (NAACP), where he started working in 1917. In 1920, he was the first African American to be chosen as executive secretary of the organization, effectively the operating officer. He served in that position from 1920 to 1930. Johnson established his reputation as a writer, and was known during the Harlem Renaissance for his poems, novel, and anthologies collecting both poems and spirituals of black culture. He wrote the lyrics for "Lift Every Voice and Sing", which later became known as the Negro National Anthem, the music being written by his younger brother, composer J. Rosamond Johnson.