I just did a Google on what you said and there are way too many answers to post here that say the opposite of what your study says. I will cut and paste them if you like but I assure you it is as broad of a range as anything racial seems to be.
This one was interesting.
http://colorofcrime.com/colorofcrime2005.pdf
For someone to go to prison, four things have to
happen. The police must arrest him for a felony,
charges must be filed, he must plead or be found
guilty, and a judge must sentence him to prison.
Racial bias could enter at any stage.
Blacks are certainly more likely to be arrested
than other groups. According to the Uniform Crime
Reports (UCR), blacks accounted for 27 percent of
arrests in 2002, even though they were only 13 percent
of the population, whereas whites and Hispanics
(W&H) accounted for 71 percent of arrests, but
were 81 percent of the population. This means that
when all crime categories are added together, blacks
were more than twice as likely to be arrested as
W&H. Blacks were four times more likely to be arrested
for violent crimes, and no fewer than eight
times more likely to be arrested for robbery.4
Many people believe blacks are arrested so often
because police target them unfairly. Brian Nichols,
the Atlanta gunman, seems to think police are arresting
blacks en masse whether they are guilty or
not. Many local authorities have passed laws to correct
what they believe to be police bias.5 Police argue
that they are targeting criminals, not non-whites,
and that they arrest large numbers of minorities only
because minorities are committing a large number
of crimes.6
The best test of police bias is to compare an independent
and objective count of the percentage of
criminals who are black with the percentage of arrested
suspects who are black. If they are about the
same—if, for example, we can determine that half
the robbers are black, and we find that about half
the robbers the police arrest are black—it is good
evidence police are not targeting blacks unfairly.
But what information do we have about the race
of criminals other than arrest reports? The best independent
source is the National Crime Victimization
Survey (NCVS). For the most recent report, the
government surveyed 149,040 people about crimes
of which they had been victims during 2003. They
described the crimes in detail, including the race of
the perpetrator, and whether they reported the crimes
to the police. The survey sample, which is massive
by polling standards, was carefully chosen to be representative
of the entire US population. By comparing
information about races of perpetrators with racial
percentages in arrest data from the Uniform
Crime Reports (UCR) we can determine if the proportion
of criminals the police arrest who are black
is equivalent to the proportion of criminals the victims
say were black.
UCR and NCVS reports for the years 2001
through 2003 offer the most recent data on crimes
suffered by victims, and arrests for those crimes.
Needless to say, many crimes are not reported to the
police, and the number of arrests the police make is
smaller still. An extrapolation from NCVS data gives
a good approximation of the actual number of crimes
committed in the United States every year. The
NCVS tells us that between 2001 and 2003, there
were an estimated 1.8 million robberies, for example,
of which 1.1 million were reported to the
police. The UCR tell us that in the same period police
made 229,000 arrests for robbery. Police cannot
make an arrest if no one tells them about a crime,
so the best way to see if police are biased is to compare
the share of offenders who are black in crimes
reported to the police, and the share of those arrested
who are black