It is useless to prove to the anti-Semites that they are wrong. Listen to what Haman said (this is an image of all accusations against the Jews): "... There is a certain people scattered abroad and dispersed among the peoples..." (Esth. 3:8) He accuses the Jews that they are not gathered in one place, they do not live separately, they are scattered among other nations. So if the Jews were gathered in one place, would Haman calmed down?