In 1965, while still committed in Newark, Hayden, along with Communist Party USA member Herbert Aptheker and Quaker peace activist Staughton Lynd, undertook a controversial visit to North Vietnam. The three toured villages and factories and met with an American POW whose plane had been shot down. The result of this tour of North Vietnam, at a high point in the war, was a book titled "The Other Side". Staughton Lynd later wrote that the New Left disavowed "the Anti-Communism of the previous generation", and that Lynd and Hayden had written, in "Studies on the Left": "We refuse to be anti-Communist. We insist the term has lost all the specific content it once had."