Space terrorists are needed and a good reason to have a more investigative RP. I'd suggest maybe changing 3 million operatives to "estimated at 3 million operatives" or similar, just because it seems like no one would actually know. Worth is also somewhat important for this sort of group IMO - do they have the funding for whole starships, large scale chemical attacks, or just assault rifles? If you get my meaning. Doesn't need to be (and shouldn't be) super specific in my opinion, but a rough idea of what they are capable of buying or at least maintaining (since you can steal a spaceship, but still need to give a crew incentive to run it) might be nice.
I'd also suggest making a general motive for them a little more clear - don't have to be too specific, but a basic reason for them to work together would be good to detail. I take it from what you have there that this reason is just a general love of anarchy and opposition to government, but a slight bit of clarification on that might be nice for others who want to use them.
Either way, approved as it is. Just some suggestions for fleshing it out.