One tactic a corporation or government will use to diffuse the power of movements is infiltrating and causing internal strife. Get those who are banded to together argue amongst themselves.
Our time together will not be about standing up to governments or corporations, there are other groups for that. Our time together, will talk about how we can collaborate and work together despite what small differences we may have so that we can make a bigger impact. By learning how we can work together, we can be another example (among others who are doing this as well) of how organizations and movements can work together to create lasting change.
One key to managing anxiety is to lean into, talk about it, and find some simple things to do to make a difference.