Among Americans with engaged contact with Israel, 91% reported feeling commonality with Israeli Jews, compared with 70% among those with distant contact and 42% among those with no contact.
Approval by Green members means the motion is now party policy, although it will not necessarily be included in the party’s manifesto at the next general election.
The system draws on government travel advisories, reports from Jewish communities, media coverage of antisemitic incidents and information submitted by users.