Question: Who's nonviolent activism inspired the man who C.T. Vivian was lieutenant to during the Civil Rights Movement?
Sentence (from "C. T. Vivian"): Cordy Tindell Vivian, usually known as C. T. Vivian (born July 30, 1924), is a minister, author, and was a close friend and lieutenant of Martin Luther King Jr. during the Civil Rights Movement.
Relevant evidence: Yes