If you block out historical studies with the subjects that are uneasy for you, in order not to provide material for private political use (e.g. Iran's president), then you are already using this "white spots" for your own private political goals and besides, prompting the adequately irresponsible reaction from your political opponents. In my very eyes an Italian researcher brought out over 2000 documents concerning the cooperation between the Italian Fascist party and the Zionist Committee for Palestine from the copy room of the Central Zionist Archives. Some time ago PhD thesis was published in Beer Sheva about eugenics in Zionist theories and practices. My own research in Jerusalem city planning differs a lot from the established view. So what? Trust me, all this shows that the Zionist movement was and is not a demonic ideological machine but an ideology like all the rest of historical movements around the world. It is the "white spots" that cater the demonisation of Israel.
Justice Ministry: Information examined by AG about Gal Hirsch didn't come from police (Haaretz)
from the article: U.S. Jews block conference set to include anti-Israel professors