There are cameras EVERYWHERE, which can complicate protesting or other activities. Also, cops follow folks in person more than they know. Here are some tips!
Vary your routine so your comings and goings are less predictable.
Meet inside, not outside, and go out different ways than how you came in.
Don't hang out for long in places with cameras on you even if you aren't doing anything.
Run, jogger! It is less weird than you think and it's much harder to get a clear shot.
If you know you are being followed, be an easy target and keep a predictable pace, in sight, so they hang back farther. Finally, when you do round another corner, change everything as much as possible, including clothing. Now you're gone.
Think someone is an undercover cop? Blatantly take photos of them and follow them.
What else?