A believer in an imaginary, mythological and demonstrably foolish and insane religion which has brought more hatred, death, torture, pain, sadness and fear to the world than anything else except Islam.
Hey, look at that Christian over there, torturing someone.
My goodness, weren't most of the Nazis also Christians? I heard the commandant of Auschwitz was a 'good' Christian who attended church every Sunday.
Listen to that Christian televangelist asking the poor little old ladies who watch his show to send them their money so he can continue his lavish lifestyle and have sex with prostitutes.