[DanBC]

When they arrest people it tends to be because that state has dual-party consent laws for recording of private conversations.

http://www.huffingtonpost.com/2014/08/13/filming-police-offi...

> A number of states do bar people from recording private conversations without consent. But as long as the recording is made “openly and not surreptitiously,” said Osterreicher, it’s fair game. According to Osterreicher, “assuming the position of holding up a camera or phone at arm’s length while looking at the viewing screen should be enough to put someone on notice that they are being photographed or recorded.”

[Blackthorn]

The thing you just quoted supports my position, not yours.