Pacheco came to wider public attention in 1981 for his role , along with Ingrid Newkirk , in what became known as the Silver Spring monkeys case , a campaign to release 17 crab-eating macaques who were undergoing experiments in the Institute for Behavioral Research in Silver Spring , Maryland . Filmmaker Oliver Stone writes that the political campaign to save the monkeys gave birth to the animal rights movement in the United States
Silver Spring monkeys
Silver Spring monkeys
Alex Pacheco (activist)