The Republican nominee for governor of North Carolina made a series of posts on a pornography website years ago in which he expressed support for Adolf Hitler, called himself a “black NAZI” and said he’d support the return of slavery, CNN reports. Of enslaved people, Mark Robinson added on a message board in 2010, “I would certainly buy a few.” An adamant opponent of transgender rights, the Donald Trump-backed candidate posted comments about enjoying transgender pornography, calling himself a “perv.” He released a video statement before CNN published its report on Thursday, denying everything …