The main function of the colonists' committees of correspondence was spreading the news of the Boston massacre and gaining support of the people around the world against the British. This Committees of Correspondence was created by the Patriots of America. I hope the answer helps you.
The event that signaled the shift and directional change of the SNCC is Stokely Carmichael became its leader in 1966. This happened when he became their leader and that he had many plans to this organization that helped the students also in protecting their rights of speech.
