Your attitude sounds like the school principal who won't defend a pupil or a boss who won't defend a worker who is being bullied. FReeping is a very specific and effective response to aggression. Airy dismissals when the left has attacked, attacked, attacked -- since the 50s -- are what got this country in the shape it's in. Even Jesus said, "If you won't stand up for me, I won't stand up for you before the Father." Do you think He appreciates this particular form of blasphemy? And by the way, I'm not Catholic.
I dont think God appreciates this kind of thing at all, but He also says "Love your enemies, do good to those who hate you, bless those who curse you, pray for those who mistreat you." That message is said loud and clear (with several minor variations) in numerous Bible passages.
If you want my personal opinion, I think the best way to fight this kind of assault is to, firstly, pray. Secondly, sponsor or produce a BETTER facebook page that either refutes or shows up theirs in a kinder, more easy to understand, more humorous and clever way. Incidentally, laughing at the ludicrousness of sin and sinners is usually very effective. "The devil, the proud spirit, cannot abide scorn" (Milton).
It so happens I'm not a Catholic either.