As God Almighty's Representatives on Planet Earth, we all have a job to do: To Serve and To Protect and To Tend to Allah's Creation.
Allah's Creation in all forms and in all places: in the West as well as in the East; in the North as well as in the South.
And do so the best way we know how. And do so without let up or respite. And whether or not we are on Candid Camera.
And, also, whether or not Our Self-Interests are advanced in any way by doing this.
For, that is our job. It was for that purpose that God Almighty created us and placed us on this earth.
His words are:
Innee Jaa'ilun Fil Ardi Khaleefah!
And when I say "We" I am referring to All of Humanity -- male and female, black and white, believer and non-believer.
Muslims are simply those who have rationally and consciously submitted to their Master, God Almighty, and have accepted this mandate and this assignment from him.
Kaafirs are those who deny they have a master. They reject him and his authority in their life. And they reject the mandate and the assignment that came from him.
So, they are Rejectors and Deniers. Just as Muslims are Submitters and Accepters.
That is all there is to it.