The course provides students with reasons for the rise of mass atrocity crimes in the world (genocide, crimes against humanity, war crimes, ethnic cleansing). The risk factors and means how to prevent them will be discussed. The role of early warning and early implementing mechanisms as well as methods to improve them are analysed in particular. Human rights violations, especially the structural discrimination against specific social groups, are an early sign of the increased risk of possible mass atrocity crimes. Therefore, early prevention of human rights abuses significantly reduces the risks of mass atrocity crimes. The legal as well as moral and political obligations of particular national, regional and global actors to prevent mass atrocity crimes are identified through the analysis of international humanitarian law, human rights and the concept of “Responsibility to Protect” (R2P). The course also introduces students to the current assessments which are aimed at improvement of structural and operational prevention measures.