I refer blog readers to the following two links for Allama Dr Sir Muhammad Iqbal's verses of poetry entitled Ishaat Islam Farangistan Mein (Propagation of Islam in the West) in his book Zarb-i Kaleem:
At the second link, an English translation is given, but I simplify it below for clarity:
The conscience of their culture is devoid of religion,
Among Western people [or Europeans] brotherhood is based on ties of race.
In the eyes of the English, the status does not increase,
of the Brahmin who joins the Christian religion.
Even if the English embrace the religion of the Holy Prophet Muhammad,
the unfortunate Muslim will still remain a slave.
Muslims, and especially Ahmadis engaged in the propagation of Islam, have always made the point expressed in the second verse above, that it is an inadequacy of the Christian religion that the non-white subject peoples who accepted Christianity were not treated as equals by white Christians of European descent. Christianity could not make them brethren. On the other hand, they pointed out the unique achievement of Islam that it welded various races into one brotherhood, whether high or low, master or slave, and that it has the spiritual power to do so again.
However, Iqbal is here saying that even the religion of the Mustafa cannot remove the feelings of racial superiority among its followers of European descent. There is an evil among some races which cannot be eradicted even if they should accept Islam! So much for the perfect religion which came for all mankind!
I came across these verses in the book Iqbal Kay Huzoor… in a footnote by the compiler of that book. The compiler noted these verses in a footnote while he was quoting one of Iqbal's conversations, of 1938, in which the Allama said that the efforts to propagate Islam in Europe by the Lahore Ahmadiyya Jamaat will be fruitless for Islam even if leading British people accepted Islam through its efforts.
I have a copy of an older edition, which belonged to the late Hafiz Sher Mohammad sahib.