He wished he could join the KKK, supported slavery, and bashed Martin Luther King Jr., all on an old porn website where he used to write.

The son of Martin Luther King Jr. has blasted North Carolina GOP gubernatorial nominee Mark Robinson over his alleged “grotesque characterization” of his father.Martin Luther King III spoke out after Robinson denied claims in a CNN report that he made a series of offensive comments on the message board of a pornographic website a decade ago.

Among the revelations in CNN’s report were that Robinson called himself a “ Black Nazi ” and said “Slavery is not bad. Some people need to be slaves. I wish they would bring it (slavery) back. I would certainly buy a few.”