As a former cart collector, I find this act extra appalling.
By the way, have you seen Wal Mart shoppers? This guy looks pretty normal. The last time I was there, while I was waiting in line, two "handicapped" individuals were playing bumper cars with their motorized carts. And they seemed to be the only ones in the whole place who knew what the hell they were doing, including employees. This guy, Ed Lui, 53, could have been store manager.