What does Superman symbolize?

He lives life as Clark Kent working a job as a reporter for a newspaper called the Daily Planet. When there is trouble- he assumes the identity of Superman as a disguise so he can use his superpowers in public without anyone knowing it is actually Clark Kent doing all that stuff. His abilities are superstrength, super flight, super hearing, super breath, heat vision, and X-ray vision. He does not kill his enemies as he fights for "truth, justice, and the American way".