girls are spanked in public with baseball bat?

I found interesting spanking pics and news; "Ketsu batto girls"(lit. girls spanked ass with a baseball bat) in Niigata.

First of all,YAMADA Taro's statue is in Furu machi,Nigata city,and this statue is just swing a bat.

(pic from http://niigata-repo.com/wp-content/uploads/2014/01/IMGP6168.jpg)

So taking pics just in front of this,girls look like they are spanked by him in the street..

pics from http://ketubatgirl.tumblr.com/

twitter's hashtag,youtube channel ,and official site(tumblr) would be useful to know more!