I understand and endorse the argument that anti-Semitism needs to be pushed back on whenever possible, mind you. But when it comes to Helen Thomas specifically… she is old, and angry, and alone; and in a few years she will be dead and I (probably) will not be. And once Helen Thomas is dead she will very quickly also be forgotten, and I suspect that she knows that already. So there is nothing that I have to do besides wait.
There is no mercy or pity in this: I waste neither on people who hate Jews. And I say nothing against those less indifferent to her fate than I.