What Is This Poem 'Say This City Has Ten Million Souls' About?

This poem is about the international problem of refugees. It is an outcome of political difference or religious and racial discrimination. In these touching lines Auden has expressed the scene of alienation of refugees coming to a country not their own. He is talking specifically of the German Jews who fled their country afraid of Hitler's persecution. However, the feelings expressed here can be shared by refugees and immigrants anywhere in the world.
The poet regards refugees the most unfortunate people.

They are given merciless and inhuman treatment by the so-called civilized societies. Human life and its dignity fall beneath the animal level. Man is imprisoned in a thousand chains of religion, race, nationality and passport. The poet condemns the division of mankind due to selfishness and narrow-mindedness. He believes that we should rise above these barriers and accept the right of refugees to live. The poem is sentimental in impact. It arouses the feelings of sympathy and pity for the refugees.

The poem is very pensive and ironic. The author seems to be lamenting the refugees, and it would seem he is one. He seems to be admiring the fish and birds, and their freedom and the peace that they have.

This poem is about political refugees. 

Its subject is the Jews who were driven from Germany in 1939 by Nazis. The homeless Jews wandered all over U.S. And other European countries. The poem is written in the form of blue song.                                                                                                                                                             

men is enimies another man how

what is the mening of metaphor tongues of glasses???