No, there are problems with racial profiling long before things devolve to "unreasonable, excessive and unwarranted violence." What defines a "problem area" as you put it? What is an "indicator"? Am I incorrectly reading between the lines here to say that you believe that it is perfectly acceptable to police black neighborhoods at a higher rate merely because they are black neighborhoods? That is, your "indicator" is, to put it bluntly, blackness.

EDIT: Like any mutual fund manager will tell you, "past performance is not a guarantee of future results." Police policy is barking up the wrong tree if they think that blackness/race are the variables to watch, much like anyone would be amiss if they solely looked at TTM rate of return for an investment option, and that is to say nothing of the positive feedback loop that racial profiling creates. Poverty, education levels, and the availability of social mobility are the variables that should be watched to create sane public policy in the USA.

Yes, I absolutely think the police should not discriminate against crime-heavy neighborhoods by policing them less than they deserve/need. To police them less is the discriminatory thing to do, as they need it more than safer neighborhoods.

Of course, the entire discussion we're having is invalid if we work with the premise that more policing = more convictions, by virtue of the crime being everywhere (across boundaries in whatever criteria you wish, e.g. race) regardless, and convictions being a simple byproduct of policing and not of said underlying factor like race, obesity, education, socioeconomic status, or hair-color.

My point of contention isn't whether or not we should police high crime neighborhoods more or less, it's whether we should condone the (less-common) explicit or (more-common) implicit police policy of using race as a proxy for the other variables that I mentioned previously. You've danced around my question: is race a valid "indicator" of "problem areas" in your model?

If the statistics agree with it, then yes, of course race can be used as an indicator of problem areas. But as I said in my second paragraph, there are certain things that invalidate that completely.