Can one people share the faith of another people in God? Absolutely not!
One thing that can not be shared by two people that are racially different is their faith in God. Other things you can share. A Black American can share his food or a room with a White, Chinese or an African Nigerian, but what can not be shared is their faith in God. Each people must have their own faith in God and that is why prophets are racially different because it is the prophets that bring their people religion as I have brought us our own religion named LIFE.
Did not Mohammed bring Islam to his Arab people? Did not Abraham bring Judaism to the Hebrew people?
Black Americans must abandon the religions of Christianity and Islam in order that we become a real people in a country of our own as the Children of Israel had to do when they left Egypt to become a nation for the first time in their existence.