On Triggernometry show Roland G. Fryer Jr. makes the claim
I thought I was going to be able to show that the police were biased very easily, and then we gathered literally millions and millions of data points on lethal use of force. what we found was Zero racial differences and that is the part that made people really really upset
He seems to refer to paper 'An Empirical Analysis of Racial Differences in Police Use of Force'. In which he writes:
VI. Interpretation
A number of stylized facts emerge from the analysis of the preceding sections. On non-lethal uses of force, there are racial differences – sometimes quite large – in police use of force, even after controlling for a large set of controls designed to account for important contextual and behavioral factors at the time of the police-civilian interaction. As the intensity of use of force increases from putting hands on a civilian to striking them with a baton, the overall probability of such an incident occurring decreases but the racial difference remains roughly constant. On the most extreme uses of force, however – ocer-involved shootings with a Taser or lethal weapon – there are no racial differences in either the raw data or when accounting for controls.
On Harvard blog Justin M. Feldman makes the opposite claim:
There is racial bias in shootings by police
Is there evidence for racial bias in police shootings in America when accounting for controls?