Communists have been further criticised for wanting to abolish the nation and nationalities. Workers have no nation of their own. We cannot take from them what they do not have. Since the proletariat must first of all take political control, raise itself up to be the class of the nation, must constitute the nation itself, it is still nationalistic, even if not at all in the bourgeois sense of the term.
–Marx Later Political Writings (p.17)
Relates to my post: Claiming and Contesting Meanings and Symbols of the Nation.