Brilliant story and photos, thanks for doing it. The shot of the guy giving the two fingered gesture was most interesting to me. If you zoom in you'll see he had a device on his right ear, none on the left.
In some circumstances I would have given him the benefit of the doubt, and maybe dismiss it as a hearing aid.
But under these circumstances it's much more likely it was a device patching him into a cental network coordinating events, similarly as to how security networks and police operate.
I don't think he was police or security though.