Where crimes, such as burglary and assault, are being committed, police will generally be called upon to act. A subset of those responses will involve police violence. One would hope that such police violence only occurs in self defense, but we know that to not always be the case. So yes, the two things are mathematically correlated. One drives the other. It would be interesting to be able to tell what the incidence rate is, rather than just seeing a group of cherry-picked incidents designed with the sole intent of satisfying the public's appetite for a specific narrative.