It's a contentious issue and many historians disagree. However, even many Jews at the time didn't really know what was going on, as evidenced from letters and diaries of the time. Many Jews genuinely thoughts they were Ghettos or concentration camps, which were surely horrible and surely people needless died there, but are far removed from outright extermination camps. So based on that I'm somewhat inclined to believe many didn't really "know" about the extent of the Holocaust.
Of course it's easy to say in hindsight they "knew" or "could have known", but in hindsight everything is easy, right? There were rumours about Jimmy Saville going back to the 70s, but did the British public really "know" what he was up to? Evne Mark Lawson, one of the few people who actually did stop and report a sexual assault (in 2006, see [1]) didn't really know the full extent of things, not really. He may have suspected, but that's not the same.
Another thing is that during the first world war there was a lot of (mostly British) propaganda about atrocities Germans were supposed to have committed, from raped and crucified nuns to Germans killing children for sport to the infamous "German Corpse Factory". This was widely reported and believed during the war, but after the war this all turned out to be a huge load of bollocks. It severely undermined the trust in the media.
There was 21 years between the wars – that's less time than the start of the Iraq war and today. Imagine what your response would be if the US government would say "we found weapons of mass destruction in $country, here as some vague satellite photos as evidence, we have no choice but to invade".
Of course it's easy to say in hindsight they "knew" or "could have known", but in hindsight everything is easy, right? There were rumours about Jimmy Saville going back to the 70s, but did the British public really "know" what he was up to? Evne Mark Lawson, one of the few people who actually did stop and report a sexual assault (in 2006, see [1]) didn't really know the full extent of things, not really. He may have suspected, but that's not the same.
Another thing is that during the first world war there was a lot of (mostly British) propaganda about atrocities Germans were supposed to have committed, from raped and crucified nuns to Germans killing children for sport to the infamous "German Corpse Factory". This was widely reported and believed during the war, but after the war this all turned out to be a huge load of bollocks. It severely undermined the trust in the media.
There was 21 years between the wars – that's less time than the start of the Iraq war and today. Imagine what your response would be if the US government would say "we found weapons of mass destruction in $country, here as some vague satellite photos as evidence, we have no choice but to invade".
[1]: https://www.theguardian.com/tv-and-radio/2022/apr/01/the-day...