137 Lately, a small number of the newer historians of the CP, most notably Mark Naison, have been making a similar points about the CP in the early 1930s. Specifically, Naison and a few others have been challenging the notion that the practice of U.S. Communists was completely out of touch with American reality, and completely dominated by a foreign-based hierarchy, during the infamous Third Period — the period in the international Communist movement that extended from 1928 to approximately 1935. The Third Period continues to have a bad name not only among anti-Communists, but also among many of the revisionist historians who are otherwise sympathetic to the party practice (especially in the subsequent Popular Front period of 1935 to 1939). In the eyes of these Popular Front-oriented historians, the party's ultra-revolutionary Third Period "class against class" stance, and the supposedly unrelenting dogmatism of its theoretical work in this era, resulted in hopeless sectarianism and isolation. There is certainly some validity to these criticisms, but, as Naison recently urged, a closer look the U.S. party during the Third Period practice is warranted/ The CP's Third Period line posited the radical destabilization of world capitalism and imminent revolutionary upsurges around the globe. This line was first advanced by the Communist or Third International, the world organization of Communist and allied parties, in 1928. It predicted economic calamity for capitalism over a year before the Crash of 1929, at a time when capitalism's eternal prosperity was regarded as (in the United States at any rate) an unassailable truth. The accuracy of this prediction gave the line credibility among its adherents. Furthermore, the economic determinism of Third International Marxism led to the assertion that economic crisis would lead more or less directly to popular uprisings and revolutionary consciousness. That this notion later proved to be mistaken does not negate the fact that it engendered confidence, elan, and a sense of urgency in cadre, allowing them to more easily overcome the widespread demoralization