I think its sometimes okay to just leave it alone and choose to ignore it rather than to help out and you can still have a clean conscious. But it depends on the person and what is being done. But if it is really bad then you probably should say something to someone in authority that is bigger than the person causing the problem, if its possible. And if you can stop what is going on on your own, then you should. But only Doc on his own wasn't able to stop apatheid so its okay that he just ignored it. And when Klikop kicked Giel Peet in the face and made him lick up the blood, there was nothing that Peekay could have done to stop it from happening so I think it was okay for him to not participate and still have a clean conscious. And even though he probably could have reported it to the kommandant, it wouldn't have mattered anyway because he didn't like blacks either. So I think that sometimes you can leave things alone and not participate in it and still be able to have a clean conscious.