Obviously, Linda is not responsible for her brother. But she pretends to be an expert on antisemitism. Linda has even spoken out on a panel about antisemitism as if she is some sort of expert.
Yet she spends a great deal of time denying that there is any antisemitism from the Left, and pretending that only neo-Nazis are antisemitic, not Arabs.
This is the Jew-hating environment that she grew up in. This is the every day antisemitism that she denies exists in the Arab and Muslim communities.
(h/t Petra)