Japan Probe has a number of videos and commentary.
Video Clip 1 SummaryLink
* The patrolman yells at some young people sitting along the side of the street, telling them to stand up because they are being a nuisance.
* Another patrolman goes after a couple young men who are leaning on a guard rail, telling them what they are doing is dangerous and inappropriate. When the men insist they are doing nothing wrong, the patrolman shouts at them until they leave.
* The patrolmen force other young people who are sitting or crouching in areas of the street to stand up, yelling at them and using whistles.