Read the following passage:
In the novel 'Winds of Change,' the author explores the intricate dynamics of friendship and rivalry among a group of university students. Each character represents distinct ideologies and aspirations, which often clash and create tension. For example, Julia, an idealist, dreams of changing the world through activism, while Mark, a pragmatist, believes that such dreams are unrealistic in today's society. Their interactions highlight the struggles between idealism and realism, and how these differences shape their relationships.
As the story progresses, an unexpected event—a campus-wide protest against environmental policies—forces the group to confront their differences and assess what truly matters to them. The theme of friendship becomes prominent as they navigate their conflicting beliefs.