A half-century ago, when blacks were commonly seen as inferior to whites, and millions of whites demanded to live separately from them, satirist Lenny Bruce efficiently skewered racists:
"Say you are white. You have the choice of spending fifteen years married to a woman, a black woman or a white woman. Fifteen years kissing and hugging and sleeping real close on hot nights. The white woman is Kate Smith. And the black woman is Lena Horne. So you're not concerned with black or white anymore, are you? You are concerned with how pretty. Then let's really get basic and persecute ugly people!"
Let's update this.
Say you're a soldier in Afghanistan. You're on patrol in a hostile village. Suddenly you hear yelling in a language you don't understand, and there's a small explosion ahead, then a second one just 100 yards away. The two guys you're with--do you want them small and straight, afraid of loud noises; or big and gay, one who's been working out since high school, and the other a hunter who happens to speak Pashtun?
If you answer that question wrongly, you are too dumb to protect this country (or your own life) no matter what your sexual orientation is. And if you're straight and terrified of some gay person coming on to you, you really ought to work through your fantasies about homosexuality. Dig up pastor Ted Haggard, senator Larry Craig, state attorney general Troy King and a few other people, and form a support group.