I think this monologue really captures the fear and uncertainty that was so much a part of the Cold War in America. It's delivered by Frederic March who plays the fictional American President Jordan Lyman in Seven Days in May (1964). This film has a great cast of stars but it's March's incredible performance that carries the film.
The enemy's an age. A nuclear age. It happened to kill man's faith in his ability to influence what happens to him. And out of this comes a sickness, a sickness of frustration, a feeling of impotence, helpessness, weakness. And from this desperation, we look for a champion in red, white and blue. Every now and then, a man on a white horse rides by, and we appoint him to be our personal god for the duration.