translation.en: And that truth is, or was, in the 20th century, that while we were beginning to develop endangered species movements, we didn't have an endangered people's movement.
translation.zh: 这个道理是20世纪， 当我们开始开展拯救濒临物种的运动时， 我们并没有一个关于濒临灭绝人种的运动。