The damaged cinder block retaining wall seems really odd. Anyone have experience with driveway retaining walls falling over/being damaged?
The wall tapered down at that point, where it stuck out into the driveway. There's only ten full-size blocks that have been knocked down, and the foundation blocks and some of the cap blocks are still in place. But each of the blocks that was knocked over would be about 40 pounds.
My immediate thought was that they were leaving in a hurry, and hit the end of the wall with their SUV. But if they hit the wall hard enough to displace at least 400 pounds of concrete block, that would have caused pretty noticeable damage even to an SUV.
My second thought was that the front of Sarah's car (in the picture) looks a little jacked up (almost like it hit something low to the ground, and pulled the bumper out while trying to reverse), so she may have hit it sometime before they left. The deKalb's mentioned that the wall was knocked over by the time the family left, implying it was still up the day before. That said, I'm guessing a car impact would have broken some of the blocks, and they seem pretty intact when you zoom in.
(Pure speculation: Either someone not thinking clearly, or someone who didn't know how to drive well yet, tried to leave in the car after Sarah got home? If the wall was hit by a car, it was hit from the near side, as if someone was trying to drive away from the house. Even if the kids weren't allowed to drive, they might have picked up a lot from observation, or tried to figure it out on their own. This might connect, too, with the other neighbor's observation that Devonte had been in his car awhile ago.)