I'd interpret the Stoic dichotomy not so much as "accept it and don't worry about it", but rather as "if it's unacceptable, it is not enough to worry, but you have to do something." It's not fatalistic, in other words.

Second, I see the necessity for concerted (political) action to right societal ills; I wonder what Stoicism has to say about that. Many Stoics were in politics or academia, so it does not strike me as an isolationist position.