I do believe that such demographic data can be useful to help direct resources for crime prevention, though.
Leaning more towards "increased police presence in the ghetto" or "only frisk the Muslims"?
Whatever works, I don't have any specific policies in mind (I'm far from being an expert in law enforcement).
But to take a specific example, I don't think information about higher crime rates for blacks is enough to tell whether we need "increased police presence in the Ghetto" - for all I know, police presence could already be 10 times the national average there.
There is a tendency I dislike in political punditry/activism/whatever (not that I'm accusing you of it, you just gave me a pretext to get on my soap box) to say "we need more X"...
This thread is for discussing anything that doesn't seem to deserve its own post.
If the resulting discussion becomes impractical to continue here, it means the topic is a promising candidate for its own thread.