Propaganda is more threatening when it begins to be recognized as sociological as well psychological in nature. Below are two major themes the first stressing the psychological aims of propaganda the second the sociological aims. "The Lonely Crowd" The "lonely crowd" is used by Ellul to distinguish the two inseparable elements of propaganda, the individual and the masses, which must be addressed by the propagandist at the same time. As an isolated unit, the individual is of no interest to the propagandist unless he is reduced to an average. It is crucial that the individual is never considered as an individual but always in terms of what he has in common with others. The individual is included and integrated into the mass because the propagandist profits from the process of diffusion of emotions through the mass, and at the same time, from the pressures felt by an individual when in a group. In this setting, "the individual caught up in the mass", the individual's reactions are easier to provoke and psychological defenses are weakened. The individual must always be considered as a participant in a mass and similarly the mass must only be viewed as a crowd composed of individuals. When propaganda is addressed to the crowd, it must touch each individual in that crowd which is in fact nothing but assembled individuals. Conversely, the individual should not be viewed as alone as a listener, watcher, or reader because the individual is nevertheless part of an invisible crowd though he is actually alone. The most favorable moment to influence an individual is when he is alone in the mass, the structure of the mass is extremely profitable to the propagandist concerned with being effective. Fundamental currents in society "One cannot make just any propaganda any place for anybody." While propaganda is focused on reaching the individual, it cannot only rely on building off what already exists in the individual. Propaganda must also attach itself to the pre-existing fundamental currents of the society it seeks to influence. The propagandist must know the current tendencies and the stereotypes among the public he is trying to reach. These are indicated by principal symbols of the culture the propagandist wishes to attack since these symbols express the attitudes of a particular culture. Individuals are part of a culture and are therefore psychologically shaped by that culture. The main task of propaganda is to utilize