"As far as I have been able to discover these differences are usually caused by the Black Jews constantly pressing for equality with the White Jews. The latter would not allow this, because they did not look upon the Black Jews as original Jews, but considered the majority of them to be either the issue of their released slaves, or of the natives of Malabar, who had been proselytes. It is related that the Black Jews always wanted to mix with the white by intermarrying; also that instead of behaving humbly towards the whites, they laid themselves out to be discourteous in greetings and salutations in the street; also that they were so bold as to take the first places in the synagogues, at public meetings and on other occasions; so that they always aimed, if not at superiority, at least at equality."
January 1, 1970
https://en.wikiquote.org/wiki/History_of_the_Jews_in_India