This little volume lists as the main causes for the rising radicalism in the lands to our south the domination of foreign capital—especially American— in their industry, which has resulted in exploitation and something close to domination; and the existence of vast estates, some owned by local magnates, others by the United Fruit Company and similar firms. Thanks to the harsh exploitation of peasants and workers and the resentment of the rising native bourgeoisie against the power of foreign capital, new political parties have formed to serve the interests of the masses. The stern repression met by such movements has resulted in increasingly violent struggles: strikes, workers’ uprisings, agrarian revolts, with native Communists playing a leading role. In most cases, the author avers, the reactionaries have repressed these movements by means of terrorist dictatorships, usually supported by the United States. Ocasional successes have been won by the masses, as in Chile and Argentina, but in Mexico, Guatemala, Brazil, and other countries the forces of reaction have kept control. While workers and petty bourgeoisie continue to fight, with the Communists in the forefront, the masses of Indian peasants have not awakened from their lethargy. Thus, in the opinion of the author, the struggle is still in its infancy.