There has been absolutely no evidence provided by any source to prove institutional anti-semitism.
There is really no evidence at all that stands up to even the most basic common sense assessment.
For example - if Corbyn is an anti-Semite, he's been remarkably quiet about it. In fact he has somehow managed to stay friends with various Jewish individuals and organisations in spite of his alleged burning hatred for them. Perhaps someone should let them know?
If you compare Labour's record of "anti-semitism" with the many easy-to-find examples of outright unapologetic racism of the British (and US) Right, there's no comparison.
There have however been public statements by Israeli diplomats explaining that "anti-semitism" is used in a calculated and cynical way to undermine politicians who do not support Israeli nationalism. And also evidence of Israeli influencers working to "take down" - their words - British MPs.
https://www.theguardian.com/world/2017/jan/08/israeli-diplom...
Meanwhile the Labour MPs making the most noise about anti-semitism also happen to be the old Blairites who were horrified when Corbyn was elected leader.
As you say - let's try not to just believe everything we read on this topic, ok?