You have blond hair, but the person who delivers your mail hates blonds and refuses to deliver to you. They deliver mail to everyone but you, and because there’s a rule that says the postal worker can choose who they want to deliver to, you can’t force them to.
So now you have to go all the way to the post office to pick up your mail because you have blond hair.
Ok, let’s say it a different way.
You have blond hair, but the person who delivers your mail hates blonds and refuses to deliver to you. They deliver mail to everyone but you, and because there’s a rule that says the postal worker can choose who they want to deliver to, you can’t force them to.
So now you have to go all the way to the post office to pick up your mail because you have blond hair.
That’s the crux of the argument.