...And let not the hatred of others make you avoid justice. Be just: that is nearer to piety.... (Quran, 5:8) The Prophet Muhammad said: {People, beware of injustice,1 for injustice shall be darkness on the Day of Judgment.}2 1i.e. oppressing others, acting unjustly, or doing wrong to others. Back from footnote 2Narrated in Mosnad Ahmad, #5798, and Saheeh Al-Bukhari, #2447. In the light of Islam, “All human beings are a single nation” (2:213). Islam doesn’t support nationalism. Nationalism is the root cause of spreading hatred & war (different rules and regulations for different nations) among different nations and is the main weapon (in past, religion was) for politicians to gain gimmick through diverting people from the real problems of human being in the world. Nationalism is a concept alien to Islam because it calls for unity based on family and tribalistic ties, whereas Islam binds people together on the Aqeedah and Emaan. That is, belief in Allah (swt) and His Messenger (saws). Therefore grouping together on tribalistic lines is clearly forbidden. It is narrated by Abu Dawud that the Messenger of Allah (saws) said, "He is not one of us who calls for 'asabiyyah, (nationalism) or who fights for 'asabiyyah or who dies for 'asabiyyah." And in another hadith, the Messenger of Allah (saws) referring to nationalism, racism, and patriotism said "Leave it, it is rotten". [Muslim and Bukhari] There is nothing wrong to love or to have special love for motherland in Islam but hating other people on based of that is not allowable in Islam. Only Allah knows the best.