This book explains how Islamism works. Islamism, whether Sunni or Shi`i, is the most existential threat to the human race in the 21st century. It is the ideology of hate, discrimination, and intolerance. It is the emblem of homophobia, misogyny, and bigotry. It can be compared to communism and fascism of the 20th century in terms of damage to human society. Every component of communism and fascism incorporated in Islamism is wrapped with religiosity and entwined with this new reading of Islam.