Such anger and violence have a long history. Cain, the first son of Adam and Eve, killed his younger brother Abel out of jealous anger.
(‏ جا ٧ :‏ ٧‏ )‏ وَغَالِبًا مَا يُوَلِّدُ ٱلْغَضَبُ ٱلْكَرَاهِيَةَ وَٱلْعُنْفَ .‏