Some do it seems.
One on YouTube goes around filming police stations desperately trying to get a reaction and he does sometimes get what he wants, thats the polices fault really for not having the professionalism to ignore him.
The knock on effect is eventually cops will miss someone who is filming a recce for something unpleasant or decide not to engage rather than be humiliated on you tube. This will be because they don’t get the support they deserve and legislation puts them in an impossible position.
Then when the inquiry comes, maybe people will listen.