My kids have always been taught that prejudice is caused by ignorance. If you want to kill prejudice, educate, educate, educate.
We haven't had issues with people treating our kids badly-in spite of me being a teen mom (pregnant at 15). Single mom til she was 6. Came out when she was 2 as bisexual-dated a woman for a year.
Continued to see the woman on the side while in an open relationship with a man, also had 3'somes with his best friend on the side over the course of that 4 year relationship-NONE of this being "secret".
It's all in how YOU act, what you teach your kids through your actions (be bold and brazen or hide out in the closet like there IS something wrong with what you are doing) and who YOU choose to surround yourself with in my opinion.
"Love As Thou Wilt"