Many Thousands Gone

"We Shall Overcome" is a gospel song which became a protest song and a key anthem of the African-American Civil Rights Movement. The song is most commonly attributed as having descended lyrically from "I'll Overcome Some Day", a hymn by Charles Albert Tindley that was first published in 1900.

The modern version of the song was first said to have been sung by tobacco workers led by Lucille Simmons during a 1945 strike in Charleston, South Carolina. In 1947, the song was published under the title "We Will Overcome" in an edition of the People's Songs Bulletin (a publication of People's Songs, an organization of which Pete Seeger was the director), as a contribution of and with an introduction by Zilphia Horton, then-music director of the Highlander Folk School of Monteagle, Tennessee (an adult education school that trained union organizers). Horton said she had learned the song from Simmons, and considered it to be her favorite song. She taught it to many others, including Pete Seeger, who included it in his repertoire, as did many other activist singers, such as Frank Hamilton and Joe Glazer, who recorded it in 1950.

The song became associated with the Civil Rights Movement from 1959, when Guy Carawan stepped in with his and Seeger's version as song leader at Highlander, which was then focused on nonviolent civil rights activism. It quickly became the movement's unofficial anthem. Seeger and other famous folksingers in the early 1960s, such as Joan Baez, sang the song at rallies, folk festivals, and concerts in the North and helped make it widely known. Since its rise to prominence, the song, and songs based on it, have been used in a variety of protests worldwide.

...
Wikipedia