Military fortifications? Yeah, the Crusades were a wonderfully Christian idea!
Defense for scholars? Yes! The Inquistion was just so fantastic at protecting free speech and pioneering scientific achievement!! I don't know why they call it the "Dark Ages" . . . .
Refuge for the Persecuted? That's right! Let's sell indulgences to the ignorant masses to pay for these refuges! We have their best interests at heart!!
Now seriously, the Catholic Church has come a long way since the Middle Ages, and Catholics have done wonderful things over the course of the past hundred years: they've saved Jews from Nazis, Untouchables from famine, and unwanted children and babies from certain-death.
And yes, the commercialist, entertainment-obsessed Christians come mostly from non-denominational American churches, but I'm not sparing my criticism from either group.
All of Christendom has its work cut out for us . . . .