Ku sii qor faqradan - Xisbiga Shaqaalaha (WP) wuxuu ahaa koox ka tirsan Kooxda Saddexaad ee Trotskyist ee Mareykanka. Waxaa aasaasay bishii Abriil 1940 xubno ka tirsan Xisbiga Shaqaalaha Bulshada oo ka soo horjeestay duulaankii Soviet ee Finland
iyo qadiyada Leon Trotsky ee ah in USSR uu hogaamiyo Joseph Stalin uu wali ahaa burcad badeed, "waa dowlad shaqaale burbursan". Waxaa ka mid ahaa Max Shachtman, oo noqday hogaamiyaha kooxda cusub, Hal Draper, CLR James, Raya Dunayevskaya, Martin Abern, Joseph Carter, Julius Jacobson, Phyllis Jacobson, Albert Glotzer, Stan Weir, BJ Widick, James Robertson, iyo Irving Howe. Siyaasada xisbiga waxaa badanaa loo yaqaan "Shachtmanite".