The only thing you can do when a group of people starts attacking you (like in this specific case) is to ignore them. There is no warning, no defense, no police or whatever that might help you here. It's a decentralized system where everybody is responsible for their own doings. If you get in trouble you have to bring yourself out. Nobody will do that for you.
A group of assholes decided on trying to tear me down. So I decided on taking a break and leaving them the space they need for their doings. I'll be back in a couple of months hoping that they have found some other targets in the meantime.
It's not about flowers believe me :)
Good luck!