Discretion has always been an element of Policing, but it needs to be applied with care and without prejudice, in particular, in cases where actions have been unintentional. Heavy handed policing should not be condoned, and is almost inevitably counter productive and a sign of ignorance and incompetence.
Discretion should never however be made in cases where there is intentional lawbreaking. By all means choose where and when a response is made, this is basic tactics, but there must always be a response sooner or later. The Police must not be allowed to choose to ignore crime and a decision to not to act must never be the final action.
Let’s hope that the government choose to provide us with enough cops to uphold and enact that noble aspiration.