The document discusses the ethical challenges faced by journalists in varying media systems, highlighting that journalism does not exist in isolation and is influenced by political, economic, and cultural factors. It identifies three models of journalism in the Western world: liberal, democratic-corporatist, and polarized-pluralist, and emphasizes the impact of media market structure, state role, and intermediary organizations on journalistic practices. The text also notes a shift towards sensationalism and partisanship in journalism, undermining its foundational mission of information dissemination.