Two things have occurred to me:
1) We could begin by researching the various (and many) minority/human rights groups. We might then make an intelligent proposal explaining how the vampire community is a valid identity group. Point is, if we get larger organizations to acknowledge our movement, we advance the movement.
2) There are a number of declarations and manifestos of the rights of individuals. Perhaps we can construct a similar document for the vampire community based upon these extant agreements.
I don't know. I'm just throwing this out there.