It's all very well organized. The initial thieves operate in gangs that pull as much off the train as possible and throw it to the ground.

The collectors below look for (ie. boxes that have a lithium/ion battery warning on them), and they break open those boxes and remove those goods.

Those high value goods are then sold to a fencer who will list them online as new from a 3rd party seller.

The remaining lower value goods are then picked over by other community members.