I don't see any benefit to being around toxic, abusive people; in fact, as a result of therapy, I am learning to not expose myself to them if I have a choice. If someone is creating an unsafe environment in what is supposed to be a therapeutic setting, I'd steer clear. If your therapist disagrees, or will not respect the effect the group dynamics are having on you, that says quite a lot right there about his approach. Can you find another therapist?