In China, millions of Red Guards have turned its dictates into violent reality. In Asia; in Europe, in Africa, in Latin America, other millions read it with fervent belief, fierce anger or chill fear. Here, in words of a terrible simplicity, are the driving ideas of the many who today controls one-fifth of the earth's people - and hopes to control the rest. It is a book that is all too easy to understand. And a message that every American owes it to himself to fully comprehend.