This book assesses what corruption means for populists, and the anti-corruption rhetoric of populist actors. The author uses the case study of Czech politicians to show how populist politicians exploit the notion of corruption in their communication. Using many examples of different political statements (by presidents, party leaders, MPs, etc.), the populist discourse of corruption is discussed in the context of other discourses presented in Czech politics. The author analyses both Czech (not only populist) political party election manifestos and the political communication on social media from Czech anti-establishment and populist political parties (ANO, Freedom and Direct Democracy, and Pirates). Based on an extensive conceptual framework the book also focuses on whether mainstream parties respond to the success of populists by adopting populist anti-corruption rhetoric themselves and the similarities and differences between the approaches they adopt. Understanding the processes of more than 30 years of Czech post-communist politics, and offering a theoretical and methodological framework applicable to research conducted in other contexts, this book will appeal to scholars of political science, sociology and economics.