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To add more detail, the central character had short, straight red hair. The rapist also had red hair, I think, and he had a big old porn stache. I remember him writing the word "bitch" on a chalkboard, telling her that's what she is, and she deserves what she's about to get. He forces her to tell him she loves him, come on, say it, and does some other verbal taunts, some of which she echoes back to him right before she kills him. And I very well remember the Oh, Crap! look on his face when she pulls out that gun. Not so dominating anymore. Now he's downright terrified and pleading with her.
I can't remember any names of any of the characters.
Edited by BradyLady

I don't think it was ever in theaters. I think it was a Lifetime Movie of the Week before there was a Lifetime Channel. Or it may have even been an episode of a drama, but I can't remember.
A man has been brutally raping women at gunpoint. The central character is brought in, along with several of his other victims, to identify him in a lineup. The trouble is, all of his victims are waiting in one room, where they are talking among themselves about which one it is. "Oh, yeah, it was definitely number five.... number five is going down.... it's number five all right." This gets him Off on a Technicality even as the main character is on the stand testifying about what he did to her. The main character is shocked and baffled. She goes down to where the man works and tells his boss he's employing a rapist. No one believes her. The (female, African-American) detective working the case tells her to stop what she's doing, or else she's the criminal and he's the victim. Finally the main character catches up with the rapist and, since the law won't deal with him, shoots him dead right there in the open. Even the detective is on site to see it happen. The detective reads the main character her rights—and her voice breaks while doing so, because she knows how unjust this all is.
Does this ring any bells at all?