The myth that gets me, and makes me want to bludgeon people:
Myth: All homosexuals are pedophiles.
Umm, FALSE. I don't know where people get this idea, or even when I first heard this stupidity, but, there you go. That's like saying "all straight people can be trusted with children". Men rape/molest little girls and women rape/molest little boys in Hetero-land just as often as it occurs in in the homosexual world.