Social critic: One of the most important ways in which a society socializes children is by making them feel ashamed of their immoral behavior.
Conclusion (thus)
Moral socialization has had a net effect of increasing the total amount of suffering.
Evidence
Moral socialization works by making children feel ashamed of immoral behavior. In many people that shame produces deep guilt and self-loathing, which can be a severe hardship.
Evaluate
If we're going to try to argue that moral socialization has a net effect of reducing total suffering, we're going to have to counteract the author's evidence which speaks to ways in which moral socialization causes suffering.
Maybe, when the parents are shaming their kids for immoral behavior (), the shaming makes Billy suffer, but then he stops hitting the other kids at school with a hockey stick.
It would seem in a case like that like even though Billy's suffering went up, everybody else's suffering went down, and so moral socialization had the net effect of reducing suffering.
Goal
Look for an answer getting at this idea that moral suffering might also reduce suffering in ways the author failed to account for. The evidence for "net effect" is incomplete if you only mention ways it increases suffering but never weigh that against ways it decreases suffering.