It's okay to be angry evenkeel. Anger serves a function and hopefully it will spur you to take appropriate action. Where anger is not OK is when it turns into harm or abuse.
Please recognize that you also have YOURSELF plopped right down in the middle of all these truly sick people. Now why do you suppose it might be that this is what you have chosen? (please note, I am not insinuating anything; I do not know the reason why, only you can know this). See, this is the kind of thing AlAnon is really good for, especially when coupled with therapy.