Thinking about Terrorism

What a thing for a beautiful Sunday, but I am reading this book review in The Age and come across this paragraph:

But perhaps this book's greatest contributions are the powerful insights it provides into the process of radicalisation. Specifically, Islamism gave Husain friends, a place in the world and a comforting certainty. Upon immersing himself in Hizb ut-Tahrir, a once-lonely young man found himself with "hordes of adoring followers". The Hizb strategically preyed upon the young and uncertain. As Husain tellingly writes, nearly everyone involved in the Hizb were "born-again Muslims".

With the complex and increasingly hostile world, I think you can substitute "Islamism" with any other ism and have the same the results. It sounds like a gang initiation. The book is The Islamist: Why I Joined Radical Islam in Britain, What I Saw and Why I Left and the review is here.