This is a deliciously ironic comment to me. You ask for what pipeline would lead someone to treat others as less than human, and then you immediately dehumanize them.
This is not a defense of the fascists, before anyone construes that. They are evil. But they are no less human, and that's an important distinction.
Each to their own. I really hate the resulting meta it leads to. Healing is worthless in dnd 5e because of the action economy, it makes more sense to let someone go down and then bring them back up. That's slightly better in pathfinder but not much. Overall I just really hate the combat in dnd 5e though, it's so incredibly boring. Especially after having played other systems.
She still has dozens of billions. That amount of money can make more money in a year than everyone reading this comment will make in their lifetime combined.
You have not looked very hard.