This document discusses several topics related to media ethics: - It outlines several media effects and media theories including the hypodermic needle theory, limited effects theory, two-step flow theory, and agenda setting theory. - It discusses agenda setting and how the media can influence what issues the public thinks about. Examples of high-profile news stories that set the agenda are given. - Ethical challenges journalists face in finding stories and remaining objective are examined. Maintaining accuracy and fairness while minimizing harm is important. - The Society of Professional Journalists' code of ethics is outlined which calls for honesty, fairness, and respect for sources.