After it's been quite for a while:
"Humans always have someone controlling them and threatening them, in a way. There are at least seven billion of us on Earth, did you know that? And Earth is a big place but seven billion is a lot of people. And we're not always that good at working together and not hurting each other. So we put some humans in charge of the other humans, and they work together to decide what the rules are, or more like argue about what the rules should be sometimes, and they argue about how to enforce them. And they hire some other people to enforce the rules, to figure out when people are breaking them and decide how they should be punished. And the system doesn't always work very well, for humans, because we don't all agree on what the rules should be, and because some humans are just abusing the system to give themselves the power to do whatever they want and hurt the people they don't like - and I think a lot of people sort of do something like that without meaning to, when they decide what they think the rules should be. But most people agree that having some rules, and having a system for fixing the bad rules and adding new ones that isn't just deciding to ignore the rules you don't like and make up your own, is better than having no rules at all."
"...It's kind of more complicated than that, especially how we got that way. But that's my view on how it works now - that's why I think a lot of humans would agree to things that sound like being controlled and threatened."