Let’s do get a grip. First of all, the history - let’s not forget that the Byzantine Empire, which was the remnant of the Roman Empire, itself pretty corrupt and decadent, was mortally wounded when it was sacked and conquered by Christian crusaders.
Let us also not forget how corrupt the Catholic Church had become by the mid 16th century, which was why the heresies started in the first place. Then there was the Inquisition, under which innocent people suffered horribly.
There were two evil political structures at each others’ throats. It all worked out OK, because, as a result of the Turks closing off the Mediterranean to Christian traffic, Columbus discovered America, and it was gold from the New World that helped finance the Christian fleet at Lepanto.
Eventually, America, specifically, the United States of American, became a beacon of morality and of liberty, which led much of the world to freedom.
Back to your metaphor, if Obama is the Turks, does McCain represent the Inquisition?
Let’s do get a grip.