Then what exactly is the problem? You can discuss crime statistics all you want, you just can't be virulently racist. This isn't a major issue to distinguish in the actual world and it's been a social norm for decades.
And if something's controversial and right on the line then that itself is discussed and resolved and that's it, that's how norms are developed.
And if something's controversial and right on the line then that itself is discussed and resolved and that's it, that's how norms are developed.