Someone is one of us when they believe in what you do, or do what you do. Usually by choice, sometimes by accident.
One of us is with us, in our midst. When they are among them, we want them to be with us. Maybe we try to make them come to us, sometimes whether they want us to or not.
Sometimes one of them becomes one of us when they have something to offer. Sometimes this is temporary, especially when the offer falls through.
Sometimes we try to make them like us, with much pain, an gnashing of teeth. Sometimes we do it for their own good but sometimes we are so afraid of their strangeness that we cannot help but try to make them less alien.
Sometimes not being one of us makes them stronger.
Those who want to fit, fall. Those who don't will lead us all...