Facebook is known for having a strict policy on privacy. Their solution is block the facebook user. Well that may prevent the victim to see the abuse, but that does not stop the abuser from continuing to post their harassing and or threatening comments.
Facebook as ordered the bullies to reveal their name, email and IP addresses, showing both who they are and where they are posting from.
Facebook said in a statement:"There is no place for harassment on Facebook, but unfortunately a small minority of malicious individuals exist online, just as they do offline. We respect our legal obligations and work with law enforcement to ensure that such people are brought to justice."
I think Facebook lives in a dreamworld, to make the statement that there is only a small minority of malicious individuals that exist on line, is ludicrous.