Blacks in America partaking in Islam has been here for hundreds of years. From some Africans already being Muslim when they came off the slave boats to these shores, to the doctrine/teachings of Noble Drew Ali and the Moorish Science Temple, to the doctrine of WD Fard Muhammed that gave birth to the NOI, to the revamp of the black muslim movement led by Warith Deen in the late 70's.
No i understand it in that sense of the where's and the who's just never the why, not that any other religion is much better but especially in the inner city Islam seems the go to religion