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.

Robinson denied the CNN report, which said he referred to himself as a "black NAZI" and expressed support for bringing back slavery more than 10 years ago.

In a post on social media Thursday, Robinson denied what he called “salacious tabloid trash” and vowed to stay in the race.