No. We are not your personal army. What you can do, because you have the records of this and screenshots, is bring this to the police, and report him to Facebook. Honestly, bring it to the police, Facebook will only delete his account, but this kind of shit isn't funny. If he is a troll, he is pushing a very touchy subject, especially in todays society.
Das some messed up shit. DDoS? Probably not. Least you could do is report him.
He looks like a guy that will do something like that. Just report him on FB.
Just play around and troll him vice versa or report him.
Ugh.
Even if it's an awkward thing to tell, make sure you inform your parents about all this.
Tell them what happened, even if it may get you in trouble or get grounded or w/e. Iunno.
I think he wants some of you :O
I don't think you can DDoS him as you don't have his IP.
However, I think it would be best to report him or have someone else report him.