I'm not sure whether the physical abuse is manefested through national superiority. Abusers are often those whom have been abused.
I'm not an expert but this amount of anger and violence could be a symptom of psychological transference. He could be unable to confront the true object of his anger..hence he attacks those he can.
I respect other cultures but I do believe there could be many more suffering from this kinda repressed/redirected anger.
I feel the laws here regarding human relations, dress, moral conduct etc is a paradox with the developing city it aspires to become.