Yes, I can answer that, because we did give consideration to it.
I'll point out this: the provision is a defence for the person who makes the document. As for the entities listed, it's not a “member of” one of these entities; it is the entity itself. So it's not every member of a police force. It's a request made on behalf of and in the capacity of the organization.
The reason it is so broad, including, for example, provincial government departments, is that we are also talking, in terms of the use of covert ID, about such officers as wildlife officers, who also do undercover work and who aren't in police forces typically but are employed by a government department, so that it would be their department, the entity to which they report, that is making the request—on their behalf, if that helps.