I think the stoic would say that other people's suffering, or in just political systems, or whatever other bad event that happens doesn't affect their own happi

I think the stoic would say that other people's suffering, or in just political systems, or whatever other bad event that happens doesn't affect their own happiness. That doesn't mean you shouldn't try to do better, or to help. They're separate problems. I can give to charity, and be happy with my own life at the same time, even knowing that others are suffering.