During his acceptance speech at the Republican convention last week, Sen. J.D. Vance, the GOP vice presidential candidate, praised Donald Trump’s call for “unity.” But this year, Vance endorsed a new book co-written by a far-right conspiracy-monger that calls progressives “unhumans” and claims they are waging an “Irregular Communist Revolution” against American civilization. The book, Unhumans: The Secret History of Communist Revolutions (and How to Crush Them), was written by Jack Posobiec and Joshua Lisec.