Because you never know what trivial bit of information may ultimately prove to be vitally important.
That's Marina Sirtis? Is she supposed to be black?
I think this is a much more accurate version of her real complexion, more accurate than the made-up way she was shown on ST. Her character in this movie is supposed to be Puerto Rican, I think. She has only a small part as a neighbor of Paul Kersey who becomes a rape/murder victim, and speaks only Spanish (or Puerto Rican).