Also, actions speak louder than words. Anyone can try to claim Jesus - was he a Muslim? A Jew? - but what matters is what he did and preached. We could try to break it down by ethnicity, biology, nationality, or what have you, it doesn't really matter. What matters is how he lived, and how his followers live.

Jews don't follow Jesus. Muslims don't follow Jesus. So who cares even if Jesus was literally Muslim/Jewish. Let's say Jesus was somehow literally Muslim. Irrelevant, Muslims don't follow Christ. Was Jesus Jewish? Irrelevant, Jews don't follow Christ. And, for the record, this goes for plenty of Christians as well.

Try to claim Christ, while not following his teachings? Even if factually correct, it's subversion.

Now, admittedly, this is coming from a non-Christian. I've said before, I believe in God, but haven't done the work to really determined where I fit in or what I believe. I don't go to church, not that that defines anything, and I don't claim to be a Christian. But it seems like, if you give any divinity at all to ol' Jesus Christ, it doesn't really matter what he was. He's the son of that God fella. Trying to pigeonhole him and call him a Jew or Muslim according to modern standards is missing the point.

Who cares if Jesus was Jewish by birth? The Jews didn't follow Jesus, and Jesus didn't follow the Jews. It doesn't matter. It's like that meme about 'oh, I'm not a Christian, but I'll preach at you about Jesus and Christianity because that's what you believe.' You can't simultaneously claim and denounce someone.