Just like most of the firearms cases that have made it to the higher courts recently, it always seems like they involve someone you would not want as a neighbor.
A Minnesota appeals court has ruled that the presence of encryption software on a computer may be viewed as evidence of criminal intent.
I think that's by design. Actually, by now I'm pretty well convinced it is.
After a few years of that, and now technology related things like this, the general population in the cattle yards will automatically regard all firearms owners as terrorists, and all computer owners (at least the security conscious ones...) as child molesters.
It's not a great leap to go from there to possession of certain books, magazines, video - the mere presence of which 'may be viewed as evidence of criminal intent'.