Yet another study shows that implicit bias training of police does not work.

This is not a surprise. The training was never intended to work, it was intended to do 3 things:

1. It gives the illusion that the powers that they give a damn, and are actually address the problem.
2. It provides a bullsh%$ job to a member of the Professional Managerial Class (PMC) who would otherwise be forced to do something productive.
3. It comforts the comfortable, and assuages their guilt over their privileged lives without actually addressing the fact that they are beneficiaries of a corrupt system..

The late Dave Graeber had this whole phenomenon nailed.

If you want to stop cops from being brutal racists, you have to make sure that when they step out of line, they are punished.