Regev brings proof by noting the well-documented antisemitism and Nazi collaboration of the infamous Mufti of Jerusalem, Amin Husseini, whom Palestinians still revere, as well as the adamant Palestinian Arab opposition to allowing Jews in mortal danger to immigrate to Palestine.
Writing in Al Quds, Qurum is angry at Regev for his "fierce and repeated attack on Hajj Amin al-Husseini, may God have mercy on him, accusing him of anti-Semitism and cooperating with the Germans and support for what is known as the final solution to the Jews and genocide and help in the killing of a million and a half Jews and pressure on Britain to close the gates of Palestine in front of Jewish immigration."
Regev didn't say Husseini directly contributed to the murder of 1.5 million children, but that Husseini preferred to see them die rather than go to Palestine. This is documented in an incident, recounted by the US Holocaust Memorial Museum:
In the spring of 1943, al-Husayni learned of negotiations between Germany's Axis partners with the British, the Swiss, and the International Red Cross to transport thousands of Jewish children to safety in Palestine. He sought to prevent the rescue operations with protests directed at the Germans and Italians, as well as at the governments of Hungary, Romania, and Bulgaria. Demanding that the operations be scuttled, al-Husayni suggested that the children be sent to Poland where they would be subject to "stricter control." Although his preference that the children be killed in Poland rather than transported to Palestine appears to have been explicit, the impact of the letters was nil.
Qurum denies or ignores nearly all of the crimes of Amin Husseini. But she admits one - and justifies it:
Of course, Husseini’s relations with the Germans cannot be denied at all, but they must be placed in their proper circumstances and context. Germany did not occupy Palestine and did not give it to the Jews falsely. On the contrary, Britain and France shared the region as a whole between them as the two largest colonial powers at that time. Within the framework of the game of alliances, isn't it natural for al-Husayni to bet politically on Germany, only in order to defend Palestine, which colonial Britain unjustly gave to the Jews?
Qurum proves Regev's main point: Palestinians need to acknowledge their support for a Nazi collaborator, not treat him as a hero. Because of his stature, it is unthinkable for a Palestinian writer to criticize the Mufti, whose hatred for Jews cannot be papered over - he was quite proud of it.