Nice way of putting it. In some sense Twitter is only really exposing how crazy people in the world actually are. Being able to ignore/block/report offensive tweets is part of their responsibility, but more generally getting people to act in a civil manner to each other is probably not really.

"Germaine Greer once wrote that women have no idea how much men hate them. Thanks to the internet, now we do." https://twitter.com/PennyRed/status/361043650970529792