They should be doing this everywhere in the USA. Every Law Enforcement Officer costs money, and they are wasting it detaining bystanders. Unless there is evidence of crime then the police force is wasting money by allowing the employees, the LEO's, to engage in activities not in accordance with the mission of the organization. Budgets are overstretched enough as it is.
Not really something for HN unless someone is thinking about doing a startup for recording-equipment to monitor police interactions :p
But very nice change of policy. As it should be!
Let's just see how it plays out in the field when alpha male cops of both sexes are high on self importance and adrenalin.