Is it right to make someone take off a religious symbol if its not distracting?

First of all, I think you can make your point much more clearly without the profanities, or calling anyone gay, which isn't really an insult anyway.

Secondly, if it's true that your principal called your symbol Satanic, I'd take this opportunity to educate him, and the rest of the school, about the history of the pentagram, and/or religious tolerance. I'd do this by writing an article for the school paper, talking to your history/English teachers (or a teacher you trust) about what you can do to spread the word, or even going so far as to stage a demonstration.

After all, you should never allow school to get in the way of your (or your teachers') education.

But as bri-marie said, some schools do have a dress code that includes no symbols. If this dress code is not enforced consistently, well, I see another opportunity for protest.

You have freedom of speech. Use it.

Depends. If (since this was school) there was a distinct "no religious symbols of any kind" policy and that is upheld for every religious symbol, then no. It was against the dress code/ code of conduct that everyone has had to follow.

However, if it isn't stated, and/or it isn't upheld for every symbol, then, yes, it's wrong. Completely.

EDIT: Also, symbols aren't banned because they are "distracting" (most of the time, there was a case about piercings, but that's off topic) they are banned because they are offensive. For example, a Muslim may find the Christian cross to be offensive to his or her beliefs. Like wise, a Catholic may find a Jewish star to be offensive ectect.

I basically agree with bri-marie.

No it isn't.
You have the right to wear and practice what you like, so if he said to take it off then you should have ignored him. If he tried to suspend you, then report him.
I'm not defending your religion because I don't support it, what I am defending is your right to whatever religion you want.