I'm more questioning the tactics, which I consider dangerous to not only the suspects, but to bystanders.
Yes, in one case, it appears racism was involved. Local coverage of the issues mentions one of the other cruiser cams recording the officer yelling a certain word beginning with "N" while trying to run down the suspect.
That, however, just relates to that officer. The fact that this method of running down suspects has been repeated multiple times suggests that it's a de facto accepted or promoted thing to do among police there.