Over at Snowflakes in Hell:

We do not require people first read The Gulag Archipelago before purchasing a copy of The Communist Manifesto, or the Diary of Anne Frank before buying Mein Kampf.

So, my question is, do more people buy Mein Kampf because they are sympathetic to Hitler and his views, or because they are disgusted by him, but want to better understand him, Nazism,  the events around the Second World War, or history in general?

[Edited to add link]