What a difference a few days can make. Until Friday morning, Discovery Channel's "American Guns" was generally regarded as a popular, not especially complicated show about the travails of a family of gun sellers. In the aftermath of the devastating murders at Sandy Hook Elementary School, the show's become a symbol of our culture's fraught but durable love affair with guns. After hundreds of Facebook users besieged the show's page, calling for its end, they got their wish: The network has canceled the show.

"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
"Instagram is Twitter for people who can't read."