Reading is nothing, in itself - look at how many HP fans think Draco is a whole and wise character. Drilling the horrors of the day, and the horrors of history, into heads is going to be counter-productive and dehumanizing after a while. Discussing books with a view to seeing how they are reflected in the current context is what I do.

If there is an indication of insensitivity, of racism, or of any such prejudice, in anyone around me, and if it seems appropriate for me to say something, I take a calm interventionist approach - my son posted something rude about a teacher on facebook, and I tried to address the issue on three levels - what if that was being said about him, what if the person saw it and decided to react in kind, and what was so wrong about being a teacher being strict in the circumstances he described? Of course, there were also side implications about the childishness of getting points with peers and so forth, but the gist, and I this is what I told him directly, was that if there was a real problem, a mean-spirited post on facebook that could lead to him getting disciplined and to the teacher being exposed to baseless ridicule, was not the way to handle it.

Not all at once and not quite so directly, as the conversation went, but it was all there.