I would agree with that. I also can see that sometimes, some would argue more frequently than that, accusations of anti-Semitism follows criticism of Israeli policy rather than anti-Semitic behaviour. It's a powerful criticism (accusations of anti-Semitism) and it's a powerfully damaging and horrible action (anti-Semitic behaviour) when it occurs.
Labour needs to work out how to make sure that anti-Semitic behaviour isn't given a home it the party because it's (the Labour party) whole ethos is built on anti-racism.