This isn't surprising, really. Silly, but not surprising.
For how many centuries have we seen Christian on Christian violence?
When Peter the Hermit's crusading army entered the city of Semlin (modern day Zemun, in Serbia) in 1096, they killed 4,000 Christians. Then there's the Inquisition and suppression of heresy, the French wars of religion, the conflict in Northern Ireland, the Thirty Years War, the Mountain Meadows Massacre, Catholic versus Protestant conflicts in the United States, the KKK's targeting of Catholics....
Ad infinitum, ad nauseum.
Regards,
Steve