Haman plans to destroy the Jews
Haman decided to destroy all Jews because Mordecai refused to pay him honor. He got permission from Xerxes to issue an edict against them.
Key passages
Es 3:5–15

And Haman saw that Mordecai was not kneeling and bowing down to him, and he was filled with wrath. But he considered it beneath him to lay hands on Mordecai only, for they told him of Mordecai’s people, and Haman sought to destroy all the Jews, the people of Mordecai, who were in the kingdom …

See also
Es 9:24;
See also
Important Things