Strong disagreement on you over Murtry. He was head of security and given a free hand at dealing with the Belters however he saw fit. There have always been racists eager to kill and harm minorities, and he was getting paid to do it.

Edit to add more: his contract was going to essentially make him a baron on New Terra, collecting a percentage of any future revenue from the colony. He just had to remove the skinnies by any means necessary, and then he was going to be set for life. That’s essentially how the Americas were colonized by Europeans, so idk why you find it so hard to believe that the ruthless racist in a hyper capitalist society wouldn’t act the same way.