Earlier quoted context omitted.
> and a large portion are more than happy to spout things they would NEVER say in real life This is pretty much an internet problem, not a Facebook problem. The things people say to each other on forums or Twitter or Facebook, especially when anonymous (but not always), are quite often horrendous.
True, and the cat can't be put back in the bag, so it's up to the collective "us", who build the Internet, to rediscover our moral imperative to fix what's broken... and Facebook is a huge chunk of this brokenness.
You're assuming people have morals to appeal to - most don't. When everyone is connected to everyone else the asshole always prevail. The solution is to sever the connections.