The Stop Rate Analyst's View

Thank you Dr.

-----Original Message-----

From: Cordner, Gary [mailto:cordner@kutztown.edu]

Sent: Thursday, February 6, 2014 4:57 PM

To: Richard Hylton

Subject: RE: San Diego Stop Rates

Hi Richard -- I will have to go back and re-read my own report to refresh my memory. In general, though, the kinds of data that we had, and analysis that we did, can document whether there are disparities in stops (although the "baseline" or "benchmark" issue is still a challenge in a border and tourist city like San Diego, so precise measurement of disparity is not so easy). What is hardest to establish, or "prove", is why? My best recollection is that we said we couldn't explain whether the disparities we found were due to so-called racial profiling or something else. Almost everybody has an opinion about what might cause it. We just admitted that we didn't have the evidence to make any scientifically valid claims about what caused it in San Diego.

Gary

Gary Cordner

362 Old Main

Department of Criminal Justice

Kutztown University

Kutztown, PA 19530 (USA)

484-560-9123 (mobile)

Modern Policing Blog: http://gcordner.wordpress.com/ World Policing Blog: http://worldpolicing.wordpress.com/

________________________________________

From: Richard Hylton [rhylton@san.rr.com]

Sent: Thursday, February 06, 2014 7:34 PM

To: Cordner, Gary

Subject: San Diego Stop Rates

Dr. Cordner;

Around 12 years ago you, together with others, performed an analysis of Vehicle Stop data for the City of San Diego.

The issues that caused the need for data collection and analysis have re-emerged; perhaps with a vengeance. The results from San Diego’s 2013 data is not substantially different from what was reported in November 2002.<http://www.sandiego.gov/police/pdf/stoprpt.pdf> My numeric analysis shows that Blacks and Hispanics continue to be given undue attention by San Diego’s finest and the denial persists. Your analysis has been put forward as evidence of lack of disparate enforcement of traffic laws, in spite of its age. Last week, the present Chief, William Lansdowne, speaking at a hastily called meeting of the Public Safety and Livable Communities Committee of the City Council, quoted the November 2 report’s<http://www.sandiego.gov/police/pdf/stoprpt.pdf> conclusion, said to be that there was no systemic racial profiling on the part of the SDPD.

It is not clear to me how specific groups, Blacks, Hispanics and Other, can experience vehicle stop rates that are a multiple of that experienced by Whites and Asians and for a conclusion such as yours to be reached. I may be mistaken, but I could not find any supporting information that explained the disparity; certainly nothing persuasive.

I will appreciate your comments or explanation on the subject.

Thank you.

Sincerely;

Richard Hylton

13166 Jane Court

San Diego CA 92129

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