See, this is what I don't like. If you have a problem with something someone says in a writers meeting, don't be afraid to say so to the person's face. If that doesn't work, then by all means, go to HR. But don't escalate things when it's not necessary. At least give the guy a chance to say, "Oh, I'm sorry. I didn't realize. I won't say it again." Then, if they double down, go ahead and report them.
I just don't like how we're becoming so afraid to confront one another on these things.