There were a few pages that were taken down because they were doing giveaways for guns. That is apparently against Facebook's TOS. Oh well, I don't agree with it, but it is what it is and their site is technically "private property", so it's theirs to do with as they see fit. Other than the few examples I've seen of that, I haven't seen much of any substantiated fact for Facebook doing a bunch of stuff like deleting pro 2A posts and such. I have a feeling people are taking the few examples where something like this has happened, and then blowing it way out of proportion.