In Hamid’s society, borders set by governments or created by oceans or mountains can be overlooked. Because of the doors, the process of migration is sped up, and countries cannot build walls or physically keep migrants out. Hamid highlights the prevalence of xenophobia and shows humans’ tendencies to divide through his accelerated migration.
When Nadia and Saeed are in London, England, the natives and the migrants are very clearly divided. England attempts to enforce their laws upon the migrants and violently threatens them. The natives believe that the migrants will diminish something about their country. They feel threatened by all the people pouring into their city, and reject the newcomers.
Divisions are created not only between natives and migrants, but within the migrant community as well. In London, the migrants divide themselves up by national affiliations. Saeed and Nadia end up living around the Nigerians, and Saeed feels uncomfortable because of the unfamiliarity of all these people have something in common that he does not. He eventually finds people from his own country and gravitates towards them, finding comfort in their similarity to him, even though they are more stranger to him than the Nigerians are now.
Whether it is the non migrants reacting to the migrants or the migrants reacting to each other, the fear of being isolated and singled out creates divisions in society.