First, define your terms
"Nationalism, that specious patriotism of the morally stunted..." -- Louis de Bernieres, Birds Without Wings, chapter 31.
"Guerillas, bandits, brigands or liberating heroes, motivated by hatred and the desire for loot (otherwise known as patriotism)..." -- ibid, chapter 50.
That would be a morally mature hatred and desire for loot, then.
[Birds Without Wings, by Louis de Bernieres, Secker and Warburg, 2004. Attempted Turkish cover-version of War and Peace, not quite as flawed as it is ambitious; the good bits are very good. Caveat: Both quotes are asides. I capped up the beginnings for aesthetic reasons.]