Albert Barnes Commentary Esther 3:6

"But he thought scorn to lay hands on Mordecai alone; for they had made known to him the people of Mordecai: wherefore Haman sought to destroy all the Jews that were throughout the whole kingdom of Ahasuerus, even the people of Mordecai." — Esther 3:6 (ASV)

To destroy all the Jews — In the East massacres of a people, a race, a class, have at all times been among the incidents of history, and would naturally present themselves to the mind of a statesman. The Magophonia, or the great massacre of the Magi at the accession of Darius Hystaspis, was an event not then fifty years old, and was commemorated annually. A massacre of the Scythians had occurred about a century previously.