Well, it's a poll, so I'm posting my answer as well. This is a highly sensitive subject and one I care not to debate on the internet (in-person conversations always seem to work out better for me :P). Anyways, I do not support it. I will not tell why, but I can say that not all reasons are religious. I won't assault anyone for celebrating this either...
Well, let me be clearer. I don't support gay marriage, but I DO support the end of discriminative bullying and whatnot. It's one thing to fight for what you believe in, but bullying, mocking, assault or any of those behaviors are wrong, no matter what group it's aimed at. So, in a sense I do support this day, but in another sense I don't.
EDIT: Wait a minute, this is allowed at a public school? For some reason, if this was aimed for Jews, I doubt they would receive the same sympathy...