“Muslims have been reporting men like this for years and their reports aren’t taken seriously. Complete foolishness and a total failure of the system. Stop saying “Muslims must report terrorists.” They are. They do. But then authorities have to do something about it .”

Khuram Butt, 27, a married father of two nicknamed ‘Abz’, even called fellow Muslims ‘Kuffar’ non-believers if they did not have beards and would not speak to women.

Source: London attack: Arsenal shirted jihadi named Khuram Butt | Daily Mail Online