Thanks to commenter Mackey for suggesting this poem by Australian Aboriginal poet Oodgeroo Noonuccal.
Gumtree in the city street,
Hard bitumen around your feet,
Rather you should be
In the cool world of leafy forest halls
And wild bird calls
Here you seems to me
Like that poor cart-horse
Castrated, broken, a thing wronged,
Strapped and buckled, its hell prolonged,
Whose hung head and listless mien express
Municipal gum, it is dolorous
To see you thus
Set in your black grass of bitumen–
O fellow citizen,
What have they done to us?