The chapter discusses how a democracy should respond to those who want to come to power in a democratic way, only to dismantle it. Should a democracy tolerate the intolerant? The chapter delineates three positions in the literature: a militant, political, and social approach. The issue is whether to forbid the enemies of democracy to act in political arenas, to include them in coalitions, parties, and debates, or to puncture their allure through economic equality and social integration.