Nations are abstractions. I belong to a greater human community. Fortunately I could witness the advent of the internet and of massive information exchange between peoples. I rejoice with a untold pride when human beings make some amazing advancement in whatever field of knowledge we happen to strive for: the many fields of science, art, philosophy. I watch with amazement when a new boundary in space travel is surpassed; when we (humans) reach political agreements that make the world a bit less inhumane (insane) and more sustainable; when we stop thinking through the lenses of arbitrary divisions and reach to a higher goal.
I am a citizen of the world (global citizenship) — and I am proud of it. I am glad I am able to learn and to share information with such a vast array of different peoples. I literally live on an utopia (no place) that is an information matrix inside my head. And I am glad to be here today typing this comment within an international community (HN).
This is my interpretation. If you try to make global citizenship a dystopian political agenda then you're talking about something entirely different.