There is absolutely no evidence that this
thing artwork periodically writhes into life and clonks bicyclists and pedestrians over the head. None whatsover. Really. Nor has it ever set down the turtle and lifted a small child aloft. As far as I can tell.
Update: a reader shared this link in comments. Could it be that The Hands are saving Broadripple's Turtle from a similarly dire fate? Ew.