Replying to the interviewer's question about whether he thought the Holocaust was unique, Hillgruber stated:...that the mass murder of the kulaks in the early 1930s, the mass murder of the leadership cadre of the Red Army in 1937-38, and the mass murder of the Polish officers who in September 1939 fell into Soviet hands are not qualitatively different in evaluation from the mass murder in the Third Reich. In response to the interviewer's question about whatever he was a "revisionist" (by which the interviewer clearly meant negationist), Hillgruber stated that: Revision of the results of scholarship is, as I said, in itself the most natural thing in the world. The discipline of history lives, like every discipline, on the revision through research of previous conceptualizations...Here I would like to say that in principle since the mid-1960s substantial revisions of various kinds have taken place and have rendered absurd the clichéd "image" that Habermas as a nonhistorian obviously possesses.