There was no claim of racism, there was speculation that was reasonably on topic and at least somewhat credible given the history of racial disparities in sentencing rules. Downvoting this speculation as low value is also fine since it doesn't really add any constructive value to the conversation.
The only thing here that is close to "deeply inappropriate" was the response asserting that this speculation constitutes a "flamewar" (which is not what that term means at all) rather than bothering to try to refute the speculation with any real information or data that would contribute to creating a constructive discussion.
The only thing here that is close to "deeply inappropriate" was the response asserting that this speculation constitutes a "flamewar" (which is not what that term means at all) rather than bothering to try to refute the speculation with any real information or data that would contribute to creating a constructive discussion.