Just a suggestion, but as a kick-off to the season of Lent, and the attendant pressure it puts on all Christians to act in a Christian manner, and to offer up sacrifice, let all of us Christians who are willing refuse to engage those hurling the insults or seeking to enflame.
It's as simple as not responding; granted, not altogether easy to do but worth it in the end. This non-respnse has a two-fold advantage: it strengthens the will and the mind of the person refusing to trade insult for insult, and it leaves the insulter soley sullied.
Again, just my 0.02 worth, and is certainly what I intend to do. Unless there is a flagrant abuse of civility, don't appeal to the moderators, let the dead bury the dead.