The head suitor, Antinous, is an arrogant man who annoys Penelope. He is the one that plots to kill Telemachus so marrying the queen will be an easier task. Odysseus is not fond of this. Antinous is the first one he shoots down with his bow. He brutally slaughters the suitors in book 22 titled “Slaughter in the Hall” and does not let a single one survive. Odysseus was ethically correct in the slaughter of the suitors. They disrespected his property, family and he and he had every right to take out his anger on them. Some plea and even brave Leodes clutched the knees of Odysseus and said,
I hug your knees Odysseus! Mercy! Spare my life! Never, I swear, did I harass any woman in your house never a word, a gesture--- nothing, no, I tried to restrain the suitor whoever did such things. They wouldn’t listen; keep their hands to themselves so reckless, so they earn a shameful fate. But, I was just their prophet, my hands are clean and I’m to die their death. Look at the thanks I get for years of service.
Following this, Odysseus killed him. He was justified for the acts that he did. As well this is in ancient Greece where people killed each other and thought nothing of it. A man’s life is not precious and valued as it is today.
Also in that time, everyone is expected to be