When there is an attack on a synagogue, it is an attack on my church. When there is an attack on a Muslim, it is an attack on me.
The Command I follow calls me, demands that I, consider others before myself, treat others as I want to be treated, no matter how the other may view or treat me. If someone wants to think him/herself a “Christian,” this is how s/he is to be (even if imperfectly) not because I say so, but because the One we follow demands it. How different the world would be if only we abide this call.