So-called “fact-checking” websites have objected to Breitbart News’ use of the term “forgery” to describe the yearbook that Roy Moore accuser Beverly Young Nelson and her lawyer, Gloria Allred, have used in attempting to corroborate Nelson’s allegation that Moore sexually assaulted her some 40 years ago. Politifact labeled the claim “Pants on Fire,” and Facebook has even attached a pop-up warning to a Breitbart article about the alleged forgery. On Friday, Nelson admitted that she had added “notes” to an inscription that she claimed Moore made in her high school yearbook. She still claims that Moore signed the yearbook, but...