Which political idea related to the Cold War is best reflected in this excerpt

The Cold War was reflected in culture through music, movies, books, television and other media, as well as sports and social beliefs and behavior. One major element of the Cold War was the threat of a nuclear war; another was espionage. Many works use the Cold War as a backdrop, or directly take part in fictional conflict between the United States and the Soviet Union. The period 1953-62 saw Cold War themes first enter the mainstream culture as a public preoccupation. For the historical context in America see United States in the 1950s.