Here's a story about a man arrested for tasking a picture of police
activity on his cellphone:
http://www.nbc10.com/news/9574663/detail.html
Read the story; several things don't make sense, not least of which is
the claim that no supervisor was on duty.
Of course, there are two sides to every story, and this one is no
exception. There is no reference to the 'new law' except to say it
exists (a competent reporter would have cited the law); the "witness"
evidently didn't actually see the picture being taken; the man and the
police have different stories (DUH!).

I don't see how there can be a law forbidding a person from taking a
picture of police activity in plain sight.
--
Bill Funk
replace "g" with "a"