Steven Levitsky emphasizes the critical need for political courage in addressing the presence of popular extremists within democratic systems. He warns that when mainstream political parties accommodate extremist views out of fear or opportunism, they undermine the very foundations of democracy. This compromise can lead to a normalization of radical ideologies that threaten democratic values and institutions.

The author argues that failing to isolate these extremists can lead to a slippery slope where democratic norms are gradually eroded. By prioritizing short-term gains over long-term democratic integrity, established parties risk allowing extremists to gain traction, which ultimately jeopardizes the stability of the political system. Levitsky's insights reveal the delicate balance that democracies must maintain to ensure their survival against extremist influences.