He later deleted the message.

A former Greater London Council member, Mr White confirmed on Twitter today that he had been suspended.
Steve Reed, MP for Croydon North, had hinted action had been taken against Mr White. Mr Reed tweeted that it would be "inappropriate to comment on a live internal disciplinary matter".
A Labour spokesperson said:“David White has been suspended from the Labour Party pending an investigation.”
Mr White told the Inside Croydon blog that it was "unwise, whatever the historical facts, to conflate Zionism with Hitler".