I dont know where you get your information from, probably youtube, but I dont understand why you make the claim that "black american churches" preach more against homosexuality then against social issues. I think the recent issue of homosexuality has happened in the past few years, yet the injustice you speak of has been happening since they were brought to America as slaves. So that is ingrained in black american history, and is systemic. The issue of homosexuality is recent, so there will be more spoken against it which you will find because it is a recent topic. IT doesn't mean that they are still not bringing up issues of education, police abuse etc. By the way homosexuality is a sin. If your problem is that the black church don't care enough about homosexuals (whichever youtube video you got that from) I suggest you head to a black church and speak with the pastor.
Also on your quote that you say the black man is becoming an endangered species is false. A species is an organism that only mates inside its population without other groups, black people can mate with whites, who can mate with chinese, who can mate with indian. There is only one species, the human species created by God. You are upset about the black church supposedly alienating gays yet in your post you show lack of understanding and are alienating the black church from the rest of the body of Christ. I doubt as well you have ever been to a black church, or possibly have a black friend for that matter. I am noticing your hypocrisy.