You should be going into airplane mode at an isolated time before you get to the protest so you don't have a pattern of 10 friends all of a sudden dropping off

You should be going into airplane mode at an isolated time before you get to the protest so you don't have a pattern of 10 friends all of a sudden dropping off the network together. Infact it's probably not the best idea to protest (in a crowd) anymore. The cops know how to kettle, and they have the tech edge. Activists need to think and act more asymmetrically.