The 2000+ year old project of fusing Israelis and Judeans, started a a security measure after the Assyrian/Babylonian invasion, never managed to truly create a single people. Though it managed to create a single ethnic identity ("jews"), under the hood, the differences remain and show up from time to time. JStreet VS AIPAC is just a old wine in a new bottle.
Five people killed in car crash near Hebron (Haaretz)
from the article: Dovish Jews? They love Israel? Excommunicate them