The ADL is a Zionist organization and conflates anti-zionism and antisemitism, it's unsurprising they provide no context and intentionally ignore historical facts that go against Zionism.

John Spencer is also not without bias. He works for the state department. I won't say all his work is bad, he has some comprehensive works such as The Mini-manual for the Urban Defender. But he does a very bad job on the Israel-Palestine conflict, because his position is the same as the US State Department, aligned with Israeli military Interests. The misinformation is blatant and not that difficult to debunk when you look for confirmation from historians and human rights organizations.

Have you read the reports by human rights organizations or books by new Historians on the subject? Because they have done on-the-ground investigations. They have a higher standard due to independent verifications from other human rights orgs and Historians respectively. This has been an apartheid for generations.