I haven't seen anyone's mic flags all week.
Could this be because they are pool mikes?
No, everyone has their own reporters in LA. I'm thinking they're trying not to attract more attention than one does holding a mic, speaking into a professional camera, durrounded by a crew. If it was me, that's what I would do. There are some interesting people out on the street.
I had a reporter friend of mine get beat up during the Rodney King riot. Back then, you didn't have cell phones. So he was reporting at a PacBell pay phone, and in mid-report, a group of guys came over and beat him up.
Los Angeles is a city where Stringer where groups like Loudlabs, Onscene and RMG News provides protest video and Police Brutality video to Los Angeles TV stations, AP and Reuters. This might be a factor why some members of the press do not have mic flags or use their own staff members for safety reasons.