This chapter will follow the long and turbulent development of journalism ethics from a parochial guide for non-digital newsrooms to a contested zone of norms for digital, global media practiced by professional and citizen. It will describe how journalism ethics has passed through five major stages of development since the printing press made possible a periodic news press in the 17th century. It will chart how journalism ethics, evolving along with society and new technology, became a profession ethic of objectivity in the late 1800s for the new mass commercial press. Then it will explain how the digital revolution brought forward a global journalism that undermined traditional norms, fragmenting a former professional consensus on both the nature and content of news media ethics.