Cameras & Cops

So it would appear that lawmakers have already started making it illegal to point cameras at cops.
According to
this article it is already illegal in 3 states.
At first glance the only reason they would do this seems to be that they want the police to be able to break the law and abuse it's power. In a court your word is useless against a police officer, videos is basically the only way possible to apply the law to police officers. A lot of witnesses may work too but human perception is tricky, they all need to say the same thing and they need to be there too.
This interpretation might however be a bit to cynical. I think most lawmakers actually want the police to follow the rules they make too. So maybe there is something else that makes them do this?
Cops on tape are appearing all over the internet. The problem is that while filming for private use is legal in most places, makes the movies public is not. Except for certain rules applying to the media, you usually need the permission of the people you filmed before you make it public.
I don't agree with that but it is how the law is written. It may explain why lawmakers take this action. Police officers don't want there faces all over the net and the simplest way to stop that is just to let them arrest people who point cameras at them.
Until we get laws explicitly making it legal to video tape cops people who post police videos online would do themselves and everyone else a favor by blurring out the faces (it is not all that complicated unless you want it to look perfect) of the officers. This would hopefully reduce the officers contempt for cameras and make lawmakers less prone to take rushed stupid actions like banning them.