> ... have been removed from Facebook with no explanation given At the very least, this should be unacceptable. You shouldn't get banned for something if you aren't told what you did. If it was for use of the word revolutionary, it should say so. Or if they called for some leader's heads, it should say so. Then they could avoid doing the same in the future and we could all agree with or criticize the rationale. As it…
The SWP could instead have their own website (which they do) and the ability to subscribe to their newsletters via email (they may have this already). Further to this they could setup their own forum on their own website, again they may already have this). This involves far fewer third parties to shut them down.
Why anyone would rely on Facebook when there are so many other options is just a sign of laziness or ignorance.