Someone pisses you off and makes you incredibly angry. Or at least make it appear to. As you feed your dislike and desire, you befriend your enemy, and lure them into a false sense of comfort. Whatever the case, let it feed you instead of breaking you apart. Desecrate as many crucifixes as possible.
Religion is a very testy subject.
Show them it is by demonstrating your complete disregard for the object in question. Hell, Christians get offended by pentagrams and scorn them in every instance. Yet, you don't see pentagrams crafted out of stone on every relevant building. Show them how offended you are by their display and loving of the cross. When that value becomes a crutch for their own beliefs, fears, and hopes, something needs to be done about it.