Revolutionary Movements During the 20th century many new revolutionary movements entered the center of world politics. Of these, fascism is one of the most difficult to place in an adequate context. Many scholars over the years have attempted to situate fascism and answer the seemingly simple question, “What is fascism?” It can be described in different versions depending on the scholar. The most familiar version is the left/right idea, while the democratic/non-democratic and industrialized/non-industrialized models are increasingly popular in understanding fascism. All of these models must rely on a concise set of criteria for their analysis, as well as how these criteria can be demonstrated. According to primary evidence, the democratic/nondemocratic and industrialized/nonindustrialized models distinguished fascism and provide a paradigmatic example of 20th century revolutions for its descriptive and dynamic characteristics of the movement. The first problem with classifying revolutionary movements as right or left tends to fall victim to the term itself. According to James Gregor, he quotes Laqueur to make this point true. "Laqueur, for example, argued that 'The terms right and left, while not entirely useless, become more problematic the further one moves in time and space from 19th century Europe (Gregor, Phoenix pg.8 ).'" With this inadequate definition of what makes a regime left or right, we are left with this conclusion: "Communists have, in fact, become more and more like fascists of the 'radical right' or perhaps have always been of the 'radical right... in the center of the paper... ammad's black Muslims. Thanks to the "failure" of Marcus Gravy, a new order was necessary for the formation of an abnormal religious fundamentalism different interpretation of the Koran, so although traits of a decay of fascist doctrine, and even if the movement itself was not fascist, an ideological decay can be seen across the spectrum of black Muslims. Although there are many theories about what changes were "fascist" regimes throughout the twentieth century, the idea of ​​ideological decay seems to occur in almost all of these regimes, even those that only slightly resemble fascist, such as the Black Muslims. The use of violence as a political tool and the collapse of major ideological claims appear to be a hallmark of “half” and “imported” fascist regimes around the world..