This post was suggested by today's 
Easter message from academic David Lavery —

For a reply, see …

"Horus Manure: Debunking the Jesus/Horus Connection," 
a post from the weblog  Jon Sorensen: Blogging on
Catholic Apologetics , dated October 25, 2012.

The phrase "blood libel" also comes to mind.

* "Documenting Victims" was the title of a post in this  journal
   from the same date as Sorensen's post— Oct. 25, 2012.