Actually, I only need good reading skills to understand you've left God:
1 John says : "If anyone says, "I love God," yet hates his brother, he is a liar. For anyone who does not love his brother, whom he has seen, cannot love God, whom he has not seen."
1 John doesn't say "brother in Christ", it says only "brother".
When you place a limit on your love, you are also directly contravening Matthew 5:43-48:
"You have heard that it was said, 'Love your neighbor and hate your enemy.' But I tell you: Love your enemies and pray for those who persecute you, that you may be sons of your Father in heaven. He causes his sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous. If you love those who love you, what reward will you get? Are not even the tax collectors doing that? And if you greet only your brothers, what are you doing more than others? Do not even pagans do that? Be perfect, therefore, as your heavenly Father is perfect."
How exactly does calling Muslims "Godless subhuman scum" and "evil sons of Satan" fit THAT command from Jesus himself?
So when you say that you are only required to love your brothers in Christ, you directly contravene what Jesus himself told us to do in the Sermon on the Mount.
For me, that suffices to indicate that you've left God behind when you've chosen to hate your enemy. I don't know if you are a good person or a bad person, powderman. I DO know that when you express your hatred or try to quibble about who you have to love, you are no longer acting as a Christian.
Islam is certainly a danger and we need to defend ourselves against it. That is not that same as hating them. You confuse the two and that's where your understanding of Christianity falls short.