@serge agreed on all counts. What the data really help with (for me) is that they start to provide a window into the fact that there are many different streams converging to create that increase. It’s not just a single group or a single thing.
Yes. One of the challenges Jews encounter is that if we talk about antisemitism, someone will come out and say it's due to [group they hate]. So it's due to the right wing, or it's due to the Muslims or it's due to Corbyn.
In the UK this often goes one step further and the label of "weaponized antisemitism" is employed very freely, with people saying that if someone complains of antisemitism, they must be anti-Labour, or Islamophobic, or whatever