A. Desmond Tutu.
Nelson Mandela was awarded the Nobel Peace Prize in 1993. (Couldn't have been able to get this award since he was in prison for 27 years, getting out 1990)
It could be argued that it is "the media" that is the most important social institution in American life, since having a free press is one of the most important elements of a democracy.
Answer:
In the early 1960s, in the small town of Delano, California, farmworkers had had enough. They called several strikes to demand higher pay and better working conditions from local grape growers. Their ideas caught on. In 1966, Filipino members of the Agricultural Workers Organizing Committee joined forces with Latino members of the National Farm Workers Association to form the United Farm Workers (UFW). Together they pushed for contracts with powerful California growers—a nearly impossible feat—by staging a nationwide grape boycott.
need more info:
http://facingfreedom.org/workers-rights/united-farm-workers
