Understanding the Labour Party policy on antisemitism

Following the first day of today's Labour Party conference their policy on antisemitism can easily be summarised:

Today's events included:

• calls to expel the 'Jewish Labour Movement' from the party (for refusing to accept that Israel was 'like the Nazis') 
• Jewish writer David Collier banned from attending a meeting of the new Jewish labour group JVL (a group that seeks the destruction of Israel) for being too Jewish for them
• multiple instances of antisemitism dressed up as 'anti-Zionism', with the worst proponents stating there was no such thing as antisemitism in the party