This document discusses various media ethics issues and concepts of loyalty in journalism. It addresses challenges around deception, plagiarism, fabrication, conflicts of interest, privacy, harming reputations, anonymous sources, and accountability. Models for ethical reasoning are presented, including defining dilemmas, examining alternatives, and justifying decisions. Core values of accuracy, independence, collaboration, fairness and transparency are outlined from the Poynter Institute Code of Ethics. Specific cases of ethical lapses by journalists are also reviewed.