Everyone needs training for their job. If they do not follow their training, they are probably not doing a good job.

You can punish him AND blame the training too, then change the training.

We can do more than one thing.

This is a horrible take. A police force only works if they follow a strict set of rules, so we need those rules to be well thought out and defined. Every officer needs to be following their directives to the letter if the police is ever going to be good.