How do you call a deaf black man? Doesn't matter how you'd call him, he would not answer
Why does their race matter here? What about deaf people?
I'm saying that as long you don't bother them, they won't bother you. Also, if you're hearing impaired, understanding of just about everything is limited to other people speaking loudly.
Things have come a long way for deaf people, they have more ways to communicate now. It is good to try to learn some sign language so that you can communicate with people who are deaf.