The titles and subtitles are very promising. I admit, however, have almost closed the book after a few dozen pages: banalities of verbosity (but the author explains), the "floating" analogies. I continue and do not regret it. The quality of the book is getting stronger, the analysis is refined with exposed the complexity of situations and the book ends with a fireworks display. The author distinguishes two poles to violence, which only the first is generally discussed and fought: the violence of the tiger, brutal visible. It highlights the violence of the spider, Backstab, tiring, invisible and often unknown, so no convicted or considered normal in such areas as the economy, politics or the media ... It also shows how these two types of Violence interact, how one can become the other's bed: a student regularly bullied and humiliated by classmates (spider violence) can suddenly "freak out" and a massacre commetre (tiger violence). The author also warns against abusive simplifications, pitfalls to avoid and warns us of the complexity of interactions that are on several levels. Finally, after giving us the key to identify the violence in our lives, our society (and ourselves), it puts us on the track means to defuse (nonviolent communication or systemic relational dynamics Dynarsis- for example). I confess I recognized the author or witnessed some of the violence and regrets not having had the chance to fall earlier in the book, which opens new perspectives. Really, I discovered "illiterate emotional and relational." In short, a book that changes our eyes and makes us want to change us, to change the world, modestly, in a concrete and realistic way. To put all the hands ...