Actually, I don't feel they were the enemy. Teens who showed up at the conference had parental permission to attend. It was a conference about sex.
Teens who attended this conference about sex required parental permission. Is that something you deny?
Why would you have a problem with a conference about sex containing sexual information?
Fisting isn't sex. It can never in any conceivable understanding lead to reproduction.
I would have a problem with a conference about sex containing information about peeing on your partner. I understand some people link this to sexual activity, but it isn't sex.
And obviously a lot of people agree with me, because the best defense GLSEN can mount was, "Hey! Nobody was supposed to know what we were talking about."
Shalom.