Well, 2 things.
1) You skipped the next paragraph in your quote:
“There’s not a single copy on the shelf. Embretson said no one has asked for it except for one guy, who was kidding.”
So, what you’re slamming is a small business that is being responsive to its customers.
2) Some posted a search with the keyword “Mao” (OMG, they have books about a major historical figure from the 20th century!). They could just as easily have done this search:
http://www.pegasusbookstore.com/search/apachesolr_search/christ
Only one post, and that defending a leftist San Francisco bookstore with a placenta-drinking-type self-fellating liberal.
Sniff?