The switch in tenses is deliberate.
The evening was golden, neither hot nor cold,
The sky is purple, pink and gold,
A light breeze cleanses the dusty path,
Golden evening, perfect day's aftermath,
The child's corpse hangs from the old pear tree,
Obscured by leaf and fruit so no one can see,
The dusk herds the farmers out and the children home,
From whichever path of life they risked to roam,
The gold subsides to black velvet sky and silver star,
They shine down on the village where all the wild-thing killers are.