Complex sentence: She worked for the Southern Christian Leadership Conference with Martin Luther King, Jr. and others from 1961 to 1965, serving as an organizer, strategist, field staff person, race-relations staff person and workshop instructor.
Split into simpler sentences: She worked for the Southern Christian Leadership Conference under Martin Luther King, Jr. from 1961 to 1965. She served as an organizer, strategist, field staff person, race-relations staff person and workshop instructor.