Who brought the Hitler article into class in To Kill A Mockingbird and why does he have trouble understanding?

This is in Chapter 26.  No one actually brought in an
article about Hitler, I do not think.  But the kid who starts talking about Hitler is
Cecil Jacobs.

It is not clear whether he brought an actual
article, but he is definitely the one who brings up the subject.  Before him, little
Chuck Little brought something that he thought was an article.  Sadly for him, it was an
advertisement.

But Cecil knew better than Chuck.  He had a
real current event to talk about, but it never actually says he brought the article with
him.