I don't think this violent crime rate data goes well with fatal shootings by police, if we want to contrast it to hours spent in training.

Your latter suggestion sounds reasonable, however, albeit more tedious to get the data, as you said yourself.

The biggest problem here is that the violent crimes is just a per-state aggregate, and not tied to an actual fatal shooting by a cop.

The violent crimes could have no overlap with any of the fatal shootings by cops.

This graph doesnt capture the differences between "someone getting shot in a McDonald's parking lot by a cop, while a violent crime is committed somewhere else" and "someone getting shot in a McDonald's parking lot by a cop BECAUSE of that someone's violent crime".