Is there a terminology or specific topic that explains the behaviour or phenomenon expressed in the following quote?
The greatest anomaly of belief is that it is so powerful it takes over the identity of a man. People of belief believe so strongly that they become the belief. They are the belief. So anything or anyone that questions their belief is taken as a personal attack on themselves and their person. Belief is so powerful and deeply set in delusion that even if presented with verifiable proof and facts to the contrary; the believer reacts with emotional outburst ranging from anger to rage to violence even murder. In the case of phylogenetic group or culture insanity it leads to war and genocide.