Do all racists.supremacists have to belong to the Klan or can some follow Jeremiah Wright, Al Sharpton, and Jesse Jackson?
No. I would say that Jackson and Sharpton and their fellow travelers are indeed racist, but not Klansman. Just as I would say there are communists who are not Stalinist.
I was not trying to argue that you should adopt my definition of "Stalinist" just trying to clarify that we had a misunderstanding because we seemed to have different working definitions.