I only dare what you do (as far as I know; political/humanitarian/social activism) when manic, and I did when I only got hypomanic, and it can really make you feel extremely vulnerable (even, or maybe more so) then, so I love you for doing what you do!
I wouldn't say it's the most healthy thing to do, but I do recognise this need to hang on to something bigger than oneself. I think self-transcendence like that is in our nature (disclaimer: not everyone's the same), but it can utterly destroy us because people don't see it like that: they see someone messing with their comfortable thoughts, beliefs, behaviour, pride and positions. They will smell blood if you feel deflated and viciously attack you. It's horrible.
All that I know that works is to not let others dictate how you spend your time. If you feel weak, just shut all that out, say you need time off and focus on just yourself (for a change). In my experience, even your "enemies" will respect that (also because you will cease your "attack"), but also because everyone in positions of power or influence knows what it can be like: (feeling like) being left out to dry. Everyone in the public eye knows that.
Don't let yourself be used in any way: you decide what you do and when. If people have any experience with these emotionally high-stakes battles, they will respect you more for it.
Try to connect to the things behind the façades people put up. To humanise. It should be possible for people to greatly respect you and your personal needs while fiercely opposing your take on things.
What you do is truly admirable!

Myself, I try to very slowly get back into such an arena. Past experiences have really taught me that is the best way (at least for me), keeping me in one piece and so being able to bring about real change. But all that experience will serve you really well in the future, so go for it! Get back in there, on your own terms, when you feel ready!
And I'm seen as a (possible) flippin'
robot by my "friends" for not being this egocentric (not just my ego) person and one that analyses things. Screw them. I would love a bit more egocentricity, but that's just not me. I'm best being me.