how does it help the calf? - Nothing. But that is not the intention of the song. M.Ted has stated the point: Ironically it describes the Jewish situation as a forigner in the Tsar's realm. If you are born as a Jew you are bound to suffer.
... but this song ignores too much of reality and simply blames the victim. - Wrong. The song exactly describes the situation (up to the beginning of the 20th century). The victim was always blamed.
And pogrom is a Russian word