That's messed up, I hope you and your friends are okay... That's the reason why I always carry a knife and a mace with me and a bat and a gun in my car. Don't get me wrong, I'm one of the nicest dude you'll ever meet but there are a lot of crazy people out there.

As for your black eye, try ice and heat and hope for the best... I surely don't wanna be out in public if I ever get a black eye. Good luck man.