As the AIPAC consensus — the norm for American Jewish political life for decades — recedes, the “American Jewish Left” is becoming increasingly visible and heterodox opinions on the left are proliferating.

However, with that profusion comes the need for distinction and nuance about the spectrum and character of that new left, not least in terms of how its constituent camps relate to Israel’s statehood and the Israeli occupation.

Etan Nechin’s recent piece (The American Jewish Left’s Untimely Abandonment of Israel’s Leftists), with which I largely agree, lacks that nuance. He...