Karim Alaa Hussain's indignation for train conductor asking a Muslim woman for her ticket twice led to him stabbing a man several times and starting to look for more "racists" in the train. He considers his actions justified and self defense. See why some immigrants are best kept out? Now he has been given the Swedish nationality and cannot be expelled for any reason. Another lesson here? Don't give the nationality to potential terrorists until they have proven their good will, learned the language, are professionals needed in the job market or have learned a profession, vow to oppose terrorism, get a real job and pay taxes.
The translation sucks but here is a link anyway