There are several limitations upon freedom of speech, We here at WALEG.com consider consideration of others as a very important issue.

Anyone using insulting words, or goes far in what he says, the comment will be deleted without notice...

Insulting others for no apparent reason doesn't make you look "cool" !

If you are just dealing with someone who is in disagreement over a comment of yours, you can pretty much remedy the situation very cleanly by being polite and ask them why they disagree. Otherwise, if you are in the wrong over your comment, then be friendly and apologize about what you said.