Communism started getting into nationalism with the rejection of Trotsky and has been into it ever since. Only “first world” leftism is universalist and pacifist. Meanwhile the “oppressed” nations are hopped up on mystical nationalism till they have it coming out the wazoo. This includes various white nationalisms in Europe too, btw. For example, the Maoist Scottish National Liberation Army wants to run every “Englishman” out of Scotland (ethnic purity)—never mind that the Angles were in Scotland a century before the Scots were!
Its goal is to rid Eire of the Sassenach and to establish a dictatorship of the proletariat.