Non-discrimination and fundamental freedoms, together with other human rights examined throughout this course, play a central role in ensuring open, tolerant societies that respect the rule of law. In turn, respect for these principles and their fundamental underpinning values, such as human dignity and equality, play a central role in many critical aspects of counter-terrorism, notably here in international efforts to counter violent extremism (see further Module 2), as well as to further other international agendas including the Sustainable Development Goals (of especial relevance here, Goal 5 gender equality; Goal 10 reduced inequalities; and Goal 16 peace, justice and strong institutions). Therefore, this Module examines both the key principles of non-discrimination and fundamental freedoms existing in international and regional law, together with important examples of how these principles can be undermined by terrorism and, in some circumstances, by counter-terrorism efforts respectively, together with how States and the international community are responding to erosions of the rule of law.