GSA... Protesting?

So, from my other threads. I have talked about starting a GSA in my school.
So far, everything is being planned for next year, and everything seems to be running smoothly.
But just today, when I walked into school, there were 400 or so flyers hung up around the school, protesting agaisnt the GSA.
As the student running the club, I have alot of things that need to be handled.
So this little protest is driving me nuts.
Kids everywhere are glaring and writing snide comments all over GSA flyers;
and now the kids wanting to join are too scared to even think about coming next year.
I have no idea how I'm going to handle this..
I just hope the protesting doesn't turn into physical contact with future GSA members such as myself.

 

I do have a sponser, but the teacher isnt here at the moment.
And sadly, my schools old. We have no cameras put up at the moment.
I brought it up to the principle, but seeing as she's getting fired anyway theres nothing she can do. At least that's what I was told.