In particular, the campaigns and efforts of those organizers are undermined and attacked through pervasive surveillance.
Tor is not a substitute for political organizing, in this age it's a necessary precursor.
Tor (and privacy tech) has become more like a substitute activity, like being a vegan or recycling plastic where it separates and isolates more than it organizes, and is mostly an empty ritual.
The people affecting the most political change (for better or worse) aren't using Tor, they are using foundations, PACs, unions, charities, churches, and organizing in the open to seize control of political offices. While you were worried about whether your posts are being read by the NSA, they've been flying around in private jets and doing press conferences.
Hard to imagine even a single would-be organizer who got side-quested into zealously advocating for Tor.
On the other hand-- easy to imagine many digital utopianists who on principle don't organize in the sense you mean, and some of them zealously advocating for Tor.
What nations have you made?
there's quite a list and tbh, I can probably afford the humility.
if you use Tor you already know what's going on. onion routing didn't save anyone from anything in 20 years. the evils Tor enabled often seem to trace back to the very states and establishments who manage and tolerate them. drug cartels run several of the governments Tor ostensibly protects users from, and human trafficking is within a degree of most western establishments in every direction, from "NGOs" to intelligence operations to the sex trade.
if you want privacy, tech is an inferior solution. make nations that protect it.