Lessons to be learned about shipping USPS

I bought 67 dart gt rocker moldings from a guy in Canada. He strapped them to a 1x4, over wrapped them with 3 inches of cloth towels, shrink-wrapped the whole thing.

The PO left it at my door, 20 degree bend 1/3 the way down, like someone jumped on it between two other boxes.

No way to prove if it was the US or Canadian PO that did it.