A walk in the forest

Slowly I walked, one step, then another.
Watching my prey; scream, run, and shudder.
"Why is it like this?" said a voice in my head.
Why do I chase them, and want them all dead?
She then turns, sees my face, and starts to scream,
sure, I'm not pretty, but that's entirely mean.
I'm not a bad guy, I'm just misunderstood.
They're the ones trespassing. I'd call the cops if I could,
but I have no phone, just a bright shiny knife,
and a horrible past, a life filled with great strife.
This wouldn't have happened, if they'd asked to come over,
or invited me to a tea party, or to a game of red rover.
But no, they just scream, and they point, and they run.
So, I walk at them slowly, 'till they fall, then it's done.