John Brown murderer or martyr

John Brown is a murderer because he murdered many people and he could have been like Martin Luther King Jr, and had peaceful negotiations. However, he decided it would be better to slaughter others and that is wrong. It also is cruel even if it is against slavery. There is a different way like others have tried to do in the past, and doing it peacefully could have ended slavery and there go the whole civil war. And it is not okay to kill for any reason. He killed many people and that is literally the definition of murdering. So he is a murderer.