On January 21, 1944, about a year and a half before the end of World War II, a dramatic item was published on the front page of Haaretz. Under the headline “Six million Jewish victims,” it brought unusual testimony for the time about the number of Jews murdered in the Holocaust. […] Yes, a year and a half before the end of World War II – and before hundreds of thousands of Hungarian Jews were murdered – it was a Jewish Zionist and not a Nazi officer who mentioned the number of Jews murdered in the Holocaust, which later became a symbol.
Ofer Aderet (Jewish journalist) “Nazis Boasted About Six Million Holocaust Victims. But It Was a Jew Who First Cited That Figure”, Haaretz, 2020