The Counter-Revolutionary Organization on Salvation and Service (CROSS) was a short-lived white-supremacist group. It was founded by the right-wing evangelist Bill Beeny in St. Louis, Missouri during the mid-1960s, and operated out of Beeny's Saint Louis Baptist Temple. Among other activities, the group mounted "home-defense seminars" -- an effort to train Temple parishioners in the use of fire-arms in order to thwart the "black nationalist revolution" that Beeny warned was imminent.
See sources listed under Bill Beeny, especially "Beeny Displays Weapons for 'Home Defense,'" St. Louis Post-Dispatch, 27 June 1966.