That's inaccurate ...it's the contents of the book being objected to. If he was distributing a cookbook this would not be an issue
Right. Distributing a cookbook wouldn't be workplace harassment. Distributing bigotry is.
I feel like you guys have never worked in an office or something. You know a manager can't go up to people that report to them and call them "perverts" or whatever because they're gay, right? Of course you know that. So what's the confusion? Just because he wrote it down instead of saying it out loud?