Terms such as puppet-masters, when used to depict people in control of large organisations, secretly pulling strings, are age-old antisemitic tropes when applied to Jews. What Reed did was far worse than what RLB did. She was referring to the activities of the Israeli regime. He was referring to an old stereotyping of Jews. He's a politician, not just any old bloke down the pub. It's no excuse for him to say he didn't know that the chap was a Jew. The Labour Party has history when it comes to kicking someone out of the party despite that excuse. Of course, in that case it was a leftie. In this case, it's a buddy of Sir Keir. Make your own mind up as to whether that's a double standard.