Nationalism is a dangerous force. It causes conflicts and war between nation-states. Nationalist movements often are violent. It is bad when nationalism has racist undertones, like it was when it culminated in World War II and the Holocaust. Nationalism is bad if nationalists hold their nation above all other and discriminate other nations, when they think that nations are not equal, that their nation is the best and only it has rights to live in their country, if they think that someone is worse and isn’t equal to them just because he has another nationality.
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