When I first read the title I wouldn't have thought people were actually going around following officers. I understand their point, but I also agree that isn't the right way to do it. You shouldn't be looking for trouble, you should just film it if it happens near you. Assuming you get enough people to do something like this then there would be enough people on the road to not have to follow cops around.

If the same number of people in the US had dashcams as people do in Russia due to insurance scams I think there would be enough people recording to catch these kinds of things at random encounters.