What: a pan-fandom slash ficathon, with sex-positive, LBGTQ(etc)-positive, kink-positive, loving fic. (Het is fine as long as it's kinky and not with people who are lesbians in canon. [Edit: Het with canon gay men probably not such a great idea either. [Addendum to the edit: JDN/Cammie is always allowable.]]) Bonus points for femslash and people who get marginalized by Hollywood.
Why: action is better than wheel-spinning rage
Who: anyone who got annoyed/outraged by that and has a bit of time and feels like writing
Where: um, there might be a comm or comms coming. But, you know. On the internet.
Telling SyFy where they can shove their plot point of a bodyswap fic where someone uses the lesbian's body to fuck a man (I wish I were kidding) might also be in order.