I think this article makes a really interesting point when it talks about global citizenship possibly imposing one's views on others who are not receptive to them. As much as I like the idea of global citizenship, it does seem to deny the great variety of human experiences and cultural practice.
To a certain extent we are all the same, but to an equal extent we are all different. I cannot claim that the life I lead and the values that I hold dear are the same as someone in Japan or Kenya. The world is a big and complicated place and people often have conflicting ideas about things. Its important not to forget this.