You are not alone. I can't help but tense up whenever a black male comes into my store. I always get super nervous because I know they can see it in my eyes, like a predator knows prey. Once I had a black customer ask me if I was racist. I told him it was the way he was dressed - white tank top is known as a wife beater. Luckily he calmed down. But there is no way I would confront one. I guess I should add that I work in a bookstore and am shocked to see black men come into the store so my first reaction is that this might be a robbery.