One of the riskyest aspects of this is the precision.
If someone says 6 million jews died, someone else says 1,4 million jews died
1 400 000 people is a HUGE. FUCKING. LOT.
But to the deniers, it is the "proof they need" that there are LIES abound ">:O" and it's very difficult to say "YES, there may have been miscalculations, exaggerations, but look - we are even trying to remedy it by correcting memorial plaques!"
But manipulative minds will use this as a point of discredit "how could you have counted 5 million wrong? Maybe you counted another five million. Maybe WW2 CREATED 4,6 million jews!? :O"
It's the same in genetics research. For decades we have hammered down that ALL humans belong to the same species, that we are - intellectually, emotionally, physically, the same. There are differences, minute ones, but as recent science is beginning to categorize haplogroups and such, neo-nazis and other right-wing extremists launch themselves on it, and begin to present this information to fit their own agenda: "Look, SCIENCE says Humans and Niggers are separate creatures!"
and a scientist has no choice but to say "eh. yes. there is a registrable difference, but - "
"BUT NOTHING! NIGGER LOVER >: O"