Get a new account, claim to be a persecuted black, female, spanish-speaking, lesbian, amputee ,cancer patient who's pro-choice, new-age cultist, anti-gun, and as high-strung as a power line.
You should be promoted to administrator by the end of the day, giving you the power to royally screw them all over. Ban each and every member, delete as many posts as possible, and basically sink the place.
If you're wondering whether or not I've done this before, I can safely and legally answer "yes", but them's all the details you get.
EDIT:
Translator There's an online translator you can use if you don't speak spanish. You know none of them will, so don't worry about the translation being horrible. If someone does call you on it, tell them you're dyslexic as well. If they buy that Kerry is winning, they'll buy anything. Especially if you also claim to be weeping and hurt by their accusation that you're not who you say you are. "Your words are like a knife in my heart!"
Also: