Wired has removed the paywall from this article about digital safety in protesting. That is awesome. Please do read it.
I would like to give a real life perspective though. You can do all or none of the things they recommend. Why? Because there are millions of us marching and they can't lock us all up. We've been laughing at them for months in the protest movement. 8% of USians (all comers, not Democrats) said they attended a No Kings rally.
https://www.wired.com/story/how-to-protest-safely-surveillance-digital-privacy/