There's a point that's not being made here, which is that if you're doing high-risk activism there's a good chance you want its organisation to be private. In fact you may well want to do it in a safe location, with people you really trust, who have left their mobile phones and any other risky electronic equipment somewhere else. I suspect the next (maybe current) generation of activists is going to struggle with that a lot, because they're pretty much cyborgs.