I still think you don't need punctuation (commas or periods) in any part of this post. The 'right and wrong' section sounds a bit too plain to carry the effect you desire, so I suggest you reconsider the last four lines in favor of something with more punch. However, you are headed in the right direction.
I have no idea how you feel about editing your work, but I would recommend doing so with this write. The concept you use is direct and simple, so there really isn't any need for punctuation when line breaks can serve the same purpose. Of course, these are only suggestions that you can use or discard as you see fit. Simplicity works well for you here.