eh, i have mixed feelings about this.
On one hand, I would like to say that so long as they are not obstructing the officer's ability to do their job, it should be okay. But then i also want to protect the people they are filming.
For example, there are some situations where an officer might handcuff a person or even put them in the car or bring them in and they are not charging them at all. They may have to hold them then take them to another location to question them.
If some assclown is trying to catch the cops in a bad way, they are also going to be filming or photographing the person the cops are working with. And i don't want an innocent person or something like that to be ruined just like I don't want a honest cop to be screwed or a bad cop covered for.