Baton Rouge cop killer Gavin Eugene Long wrote a self-help trilogy targeted at black people, titled “The Cosmo Way: A W(H)olistic Guide for the Total Transformation of Melanated People,” in which he claimed that black people are genetically superior to white people. Long wrote all three books under the name Cosmo Setepenra — the same name he used on YouTube and Twitter and for his website. As originally reported by The Daily Caller, Long railed against “crackers” and claimed to have been a Nation of Islam member in the videos. Speaking of the trilogy in one of the YouTube videos,...