This footage is from annual demonstration event held by Nippon Sports Science University at Yokohama Arena, November 11th, 2015. You can see amazingly synchronized group walking performance by the student. The same kind of performance by them went viral on the Internet in the past, but this is the latest one.

日本体育大学集団行動２０１５/神奈川新聞（カナロコ）

They did some more great performances.

第５３回体育研究発表実演会 日本体育大学/神奈川新聞（カナロコ）

These are from the same event in the past.

集団行動 14th,December,2009 In kanazawa, Japan