The Holocaust was deliberately kept under wraps because of the feared outrage it would generate among the German civilian population. Up until the liberation of the camps many civilians living next to them still thought that the Jews were being deported to the east. While Anti-Semitism was at a sky high even the Nazi Party and the SS knew that full on genocide might not get enough support.Lol German civilians can claim they didn’t deserve to die because they didn’t know of the concentration camps, but the Japanese civilians knew exactly what their soldiers were doing. Why do you think they were suiciding before being captured by Americans? Because they were afraid others would do onto them the same. Their war crimes were published in newspapers and supported by the civilians. Not to mention the slaves they captured from the continent. Let’s not act like Japanese civilians weren’t in on it. You reap what you sow. Biggest mistake was not letting the soviets occupy them and put them to hard labor.
In contrast, Japanese published a beheading contest bragging about who could kill the most Chinese. Let's not mince words here, the Japanese population had way, way more understanding of IJA crimes than an average German civilian would have about the Holocaust. They thought that they were the superior race of Asia and that they could take whatever they want from the rest of Asia, only to be humiliated and occupied by the US.