Probably a lot of white people make the assumption that a black person will be politically on the left. I do. I also make the assumption that anyone in this area, especially my fellow Jews (unless clearly orthodox), are going to be on the left. So I stay in my closet.
It's normally a safe assumption to make, but not always. Some of my left leaning customers sometimes assume I'm a Democrat because I'm black. Makes for some awkward situations.
Even in your “closet” you aren’t alone, you have God and Freepers .
Take care!