Kudos to the Memphis Police Dept. for instructing their officers to uphold the Constitution.
I found the following interesting:
"The policy outlines what MPD officers “shall not” do if a person, who is legally allowed to be there, is recording. For instance, officers can’t demand an ID, detain the person, demand the person stop recording, or demand an explanation of why the person is recording."
In 2005 I was questioned by a very polite officer (not a rental cop) when I was photographing a large sculpture in a public location. He asked me if I wouldn't mind telling him why I was photographing that morning. I told him I wanted to document the sculpture. He said thanks, enjoy your morning. I had my ID ready when I saw him stop and approach me and I offered it to him. He said, "I don't need to see your ID, thanks." He said sooner or later somebody would call in reporting a photographer was taking a lot of photos and he just wanted to give the dispatcher something to tell them.
Rental cops are a completely different matter. They have no idea about the First Amendment.