This is significant because when police officers respond to crimes, they look for the offenders who are described to them by witnesses. On the other hand, frequently the other Part I crimes of theft, burglary and car theft have no witnesses. Cops are simply investigating the people who are being described to them as offenders. The responding officers are certainly not going to randomly stop people in the surrounding area. It should also be pointed out that the people who are describing the offenders to the police are also frequently minority.
Blacks are also the victims of crimes more often than whites.
Of course, to some people this would just be evidence that the criminals are racists. They argue that whites, blacks and Latinos have roughly the same amount of driving skill. Based on my years as a Police Officer, I generally agree with this assertion. Consequently, blacks may not be able to keep their vehicles inspected, registered and roadworthy. For various reasons, minorities may be less likely to obtain a driver's license.