Which, to begin with, is a bit weird. Technically there's no direct link between diversity and gay rights. There are *many* other things you could celebrate the diversity of, and linking "diversity" to "gay rights" seems to be sort of . . . not diverse. Not only that, but mathematically speaking, you could make a pretty good argument for homosexuality being *less* diverse than heterosexuality (since, after all, it only involves one gender at a time.)
But I digress.
Here's my idea: Buy 20 "CELEBRATE DIVERSITY" stickers - all identical - and cover the back of your car with them.
Well I think it's funny.