> What habits are useful to practice and what tools are useful to use to facilitate communication without getting nonviolent, peaceful, legal protesters in trouble just because they are trying to organize to express dissent?
I guess the first question is in trouble with who? For the longest time I worked at a place that pressured employees to avoid getting involved in politics which turned out to just be patently false and was only ever used to squash one side of the argument. So, in that case, I just didn't post things where my employer might run across them, which doesn't take very advanced technology.
If you're trying to protect yourself from a government, you're going to probably have a bit more work ahead of you.