Movies reflect and have always reflected society because they show what is important to people. Films demonstrate fads and hot-button issues. Cinema is not only a work of art but also an instrument of social reform since it expresses the feelings of human beings and their idea of ​​contemporary society. Films are the mirror that reflects society. They are controlled by powerful forces that filter information to the public and reflect their fears. This has been held true in the film industry for many decades. For example, when society was afraid of widespread crime, then there were many films that reflected the police catching criminals. When society felt that schools were not educating children, then films were shown that reflected inspiring teachers or school administrators who took responsibility and transformed the school. This has been true for all types of films over the decades. The popular science fiction films of the 1950s were no exception and reveal some of the widespread fears of that era. The 1950s were in fact a decade of contradictions. Americans were both optimistic in the postwar economic period and fearful in the shadow of the Cold War and the Atomic Age. Hollywood released many films during this period that reflected society's paranoia and fears. Their paranoia was perpetuated by fear of invasion and espionage, fear of radiation, and fear of social change. Many of the films produced used the science fiction genre to delve deeper into these fears without scaring audiences away from their political message. Even though the United States and the Allies won World War II, there was paranoia about communism, including fear of invasion by the Soviet Union and China. This fear stems from the Cold War and the belief that we must change for the better. In the film, Klaatu appears before Barnhardt's colleagues and warns them that, as the universe grows smaller every day, threats of aggression cannot be tolerated. Klaatu assures them that they will be under the watchful eye of a robot called Gort, invented by a planet organization determined to eliminate violence. Each planet is guarded by a robot that acts impartially against aggression and the inhabitants live in peace. He informs the crowd, "Your choice is simple: join us and live in peace, or continue on your current path and face annihilation." Popular science fiction films of the 1950s revealed some of the widespread fears of that era. During that time of fear and change one must remember that the struggle was not alien versus human. It was rather a question of man against himself and man against the environment.