Any employer who says, "I'm firing you because you're queer", is too stupid to stay in business anyway.
Same for any employer who says "I'm firing you for abusing company equipment" the day a queer employee leaves his original for a gay party flier on the company copier [it happened, and the employer lost in court]. You fire at a distinctly separate time from your real reason for firing, and you never say why, not even if an explanation might help the person you're firing.