The purpose of the research is to know about political communication ethics in a demonstration. Political communication ethics is one of the efforts to prevent anarchic actions in demonstrations. In a demonstration, there are ways of expressing opinions to understand. Anarchic demonstrations can cause the goal of the demonstration not to be achieved. This research used a qualitative method with a descriptive approach. In this research, researchers use data analysis to explain political communication ethics in the demonstration in Indonesia. The results of this study show that in political communication ethics there is politeness. Therefore, demonstrating is required to understand ethics in expressing opinions. This political ethic is influenced by social, cultural, political, and economic factors developed in society. An ethical demonstration can lead to the achievement of the objectives of the demonstration. The result of this research's discussion is that political communication ethics adhere to politeness, so that political communication ethics requires political communication actors to understand the social, cultural, political, and economic influences on political communication. By understanding the ethics of political communication, it will create a peaceful demonstration