Most obvious problem is: define offensive. What other people take as offense doesn't look offensive to me at all, and vice versa. There are other problems too.

Most obvious problem is: define offensive. What other people take as offense doesn't look offensive to me at all, and vice versa. There are other problems too. The only way to fight offenses is to restrict phrasing to Common Universal Neutral Terms. Of course, message consisting only of Common Universal Neutral Term Sequences cannot possibly contain an offense!