Apology in America it must be legal, in Europe it's potential imprisonment unless there are valid reasons. They can seize anything filming them and charge with crimes. Publishing them online is an obvious crime.

But okay I presume on active scenes of investigation. It's the above. Like filming Miltary installations. Similar concept. America has those laws.

Filming cops, problematic. Half and half depending on the cops and State. What about FBI, Swat, other agencies. That line is now blurred.