The New England ship owners made a good bit of money transporting slaves ; slaves who were captured and sold by their fellow Africans. It seems that black Africans (especially Christians)are still being enslaved today (by blacks practicing Mohammedism , mostly).
Perhaps Farrakhan and his fellow travelers should cast their efforts eastward ?
Not sure about the reference to Muslims enslaving Christians, but New England shipowners certainly "aided and abetted" the slave trade -- DESPITE their shame in it.