the prophet Muhammad has ordered the deaths of many people whom he believed were committing wrong doings. Not only that, but he also established laws; like lashings and amputations of limbs for reasons such as stealing and committing adultery. Thanks to these laws, Muslim countries like Saudi Arabia still implement these laws and use it to justify their actions. Muslim men were told to *lightly* hit their spouses if they were behaving inappropriately and weren't listening to them. Now in modern times, Muslim men use this as a justification to abuse their spouses and use it as means of control. You might say, this is wrong and these Muslim men clearly aren't following the Quran properly, but no, the prophet still promoted violence, no matter how minor, it is still violence. And its not like he clearly defined by metaphysical laws what 'light' hitting means. I really wouldn't speculate much as to why islamophobia still exists when such sharia laws are implemented and followed by Muslims in the world.

So you believe in the concept of good and evil on the basis of the definition you mentioned, that if one's existence is antagonistic towards the other life on earth. But in what sense do you mean antagonistic? As some people commit deeds that are antagonistic, like religious suicide bombers but truly believe they are doing good. Would they be considered evil? their actions are considered evil but they believe they have done a good deed in the same way a person would have done a good deed by giving out charity to needy people. In this sense, their actions are considered completely antagonistic towards other life on earth, but their intentions are pure, perhaps in a sense only they could comprehend. So would you disregard intentions, and only focus on the actions imposed on any scale to define a person good or evil?

It really depends on how you define murder and what is good and bad, it sounds like you are the type of person to see thing in a black/white manner. Sure it is murder as you kill another human being, but is it wrong or bad, who knows