Editor's note: John D. Sutter is a columnist for CNN Opinion and creator of CNN's Change the List project. Follow him on Twitter, Facebook or Google+. E-mail him at firstname.lastname@example.org. The opinions expressed in this commentary are solely those of the author.
The dog photos are difficult to view.
They show man's best friend being stuffed into wire cages and trucked, illegally, across borders in Southeast Asia. The destination: restaurants in Vietnam.
That thought alone - that someone would sit in a public restaurant and order dog from a menu - is likely enough to get most "dog people" to stop reading this column, much less look at the photo essay featured this week by CNN's photo blog.