I'm surprised.
Noone at my work would blink if they found me carrying, I don't know, some Clive Barker book.
Most of that kind of content can be found on newspapers now, the state of the world being what it is, and where I work noone I think would object to me reading about that stuff (as long as I don't do it on the company's dime).
And I live in Germany which, I hear all the time from across the pond, has all kinds of free speech issues.
Again, I'm not saying I'd let my son read the bible.