http://www.salon.com/ent/video_dog/elsewhere/2006/06/28/subway_pushers/print.html

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L.C.
Jun. 28, 2006 | Because of the crowded morning commute, Tokyo's subway system has long employed white-gloved oshiya, or "pushers," whose job is to cram passengers into already full cars so that the doors will close and the train can leave on time. See the human-sardine packers in action, with a side of incredulous laughter from foreign onlookers.
-- L.C.