Piers Morgan (Jeff Schear/Getty Images) Piers Morgan (Jeff Schear/Getty Images)

Authors know not to turn down publicity for their books. Reviews, blog posts, chats, word of mouth — all of it can help propel your opus up those topseller lists. Never turn down an opportunity.

Unless, perhaps, you’re a CNN personality crusading for tougher gun laws and the fellow offering a review is a frequent on-air opponent. Such was the scenario that unfolded on Twitter today, with that CNN personality being, of course, Piers Morgan and that on-air opponent being John Lott, author of “More Guns, Less Crime.”






Perhaps this is a branding thing for Morgan. Bill O’Reilly has claimed the maverick brand; Rachel Maddow the brainy brand; Sean Hannity the ideological purity brand; Ed Schultz the blowhard brand; and so on. That leaves the nasty brand wide open.