“Smile” is the legendary Beach Boys album that consumed Brian Wilson in its development. This pastiche has the surfer boys harmonizing about American Indians losing their land and identity. A “ribbon of concrete” eroded a culture and history of an entire people.
Sort of that’s what this is about. Who knows! The reach could be broader than native Americans, because the song, sometimes or formerly known as Do You Like Worms, also puts into melody a Hawaiian thanksgiving prayer.