Be who you are.

You know your not a Satanist, what a rediculous concept to start with.

Think of them as children, be nice to them even when their mean to you.

Now SOME christians really are full of light and will never be mean or act uncivilized, so don't discount them all either.

Intent is what matters, lead by example, God's grace fills those who pay attention to Him regardless of anything else :)

Best Wishes