Is a clipping of the Hatfields and McCoys worth anything?

It would depend on what kind of clipping. If you are referring to a clipping that came from a newspaper, most collectors prefer the entire newspaper (or magazine), as opposed to just a clipping. But depending on the date of it, what condition it is in, and how it has been preserved (for example, is it part of an old scrap book that traces the history of the feud), it might have some small value, though not as much as an original old newspaper that covered some important part of the story.