You can debate the wisdom or accuracy of Jerry Falwell's comments on "60 Minutes" last week calling Mohammed a terrorist, but Zakaria might want to watch it when he says, on ABC's "This Week," that those comments and similar ones made by Pat Robertson and Franklin Graham are "un-Christian."

Christianity is a unique among religions nowadays in that it preaches exclusivity. Christians believe that Jesus is the only way heaven. Because of that un-PC fact, Christians are ofttimes demonized when the truth conflicts with the politically correct line that all religions are right.

The truth is that Mohammed spread his beliefs by the sword.

Christianity has also done this over the centuries -- the Crusades being the most notable example.

But the major difference is this:

Christians forced conversions of people has always been in violation of the teachings of Christ and the disciples as detailed in the New Testament.

Muslims forced conversions of people, or, barring conversion -- execution, is not only sanctioned by the Quran, but required.

Sometimes the truth hurts. But it doesn't hurt nearly as much as being killed for not becoming a Muslim.