The legal situation is this:
The free state of Bavaria has inherited Hitler's assets. Including the copyright to My Kampf.
Bavaria does not allow any reprints, unless for scientific purposes with commentary alongside the text. Obviously publishers abroad don't always care about that.
(Interestingly, publication in the US and England is actually legal, since the rights to publish in English were sold long before Hitler's death).
Other than that copyright issue there is no legal mechanism in place to ban Mein Kampf. People have been buying, bequeathing and selling unannotated versions (of which there are many around, the Third Reich isn't some fantastically distant past, after all!) without problems.
The question that has been popping up in political circles every now and then and that has reached some urgency now is how to proceed.
Because Hitler died in 1945, his copyright ends on January 1st, 2016.
There are people calling for special legislative action, but I doubt it's coming.
It is amazing though how it pretty much spells out exactly what he would end up doing once he took power, in all the horrid detail, and yet some politicians of the time believed that simple appeasement would work...
As someone else here said, the lesson is that crazy people sometimes mean what they say, even when it sounds totally crazy.
Yeah, the challenge is to figure out which crazy people are actually crazy and mean what they say, and which ones say crazy things simply to gain votes.
Well, at least most of them are really short.
I'm unsure what the definition of pamphlet is, but the communist manifesto definitely exceeds what I'd consider length limits for pamphlets.
The definition of a pamphlet is an unbound booklet, which is how the Manifesto was originally printed. It's length was 23 pages.
Having anything about Mein Kampf in your browser history is absolutely zero problem in the US at least.
You could read about Hitler and read his book all day long if you like, nothing will come of it. Not an exaggeration, not a joke.
Mein Kampf can be purchased at just about any major bookstore in the US. Very few people in this country would find it weird or shocking if you read that book. If you proclaim an association with his ideas or the Nazi movement, that's an entirely different matter.
You can easily find the English edition online.
So, merely reading it transforms you into a monster?