佐藤栄作
In 1970, Beheiren took a leading role in organizing large-scale protests against the automatic renewal of the U.S.-Japan Security Treaty, which allowed U.S. troops fighting in Vietnam to be based on Japanese soil. However, these "1970 Anpo protests" failed to prevent automatic renewal, as the government of conservative prime minister Eisaku Satō simply opted to allow the treaty to continue as is.