"On streets that have both sidewalks and bike lanes, we should take license plate photos of the SF and McD guys...report to their companies, rather than the police."
Oh no. My strong advice is that foreigners in China should keep a low profile and not do anything which might seem aggressive, like whipping out your phone and snapping shots of various transgressions you come across. Besides, how is anyone to know what you plan to do with the photos.
(And yes, violating my own rule, I once started taking some video of SF guys tossing packages around like they were footballs, and they were not happy.)