While celebrated and enjoyed by as many as 70,000 people in one night as Tokyo's biggest unofficial Halloween, the massive gathering of costumed party-goers at the famous Shibuya crosswalk has drawn growing criticism from inconvenienced due to heavy littering and rowdy crowds. That criticism may have reached an all-time high this past Saturday night, when five people were arrested for groping and trying to take up-skirt pictures, and a small truck was overturned as the festivities turned violent.

The primary focus of this year's edition of the event's backlash occurred at around 1 a.m. on Sunday, when a small truck in Shibuya was surrounded by a crowd of unruly costumers, some who jumped into the small bed of the truck, the Sankei News reports. Unable to proceed, the truck's driver left the car to inform the police, and while the truck was left unattended, it was tipped over by several members of the crowd.

Other videos posted to Twitter show people fighting among each other and antagonizing police arriving on the scene. Five people were arrested for groping women and photographic voyeurism, a growing concern at densely populated events in Japan. Another growing problem is the increasing amount of trash improperly discarded, often left on the streets. Japan Today reports that roughly 7.8 tons of garbage were collected last year, including bottles, cans, and leftover costume accessories (fake blood, clothing, etc.)

Popular artist avogado6 called attention to this issue in a piece titled "Monsters Who Spit Garbage".

Sankei News reports that following an increased deployment of police, the streets of Shibuya experienced a much smoother celebration, but many on social media are lashing out with frustration at the event, with some saying: "I can't believe the video I watched took place in Japan." "We should just get rid of Halloween, it's not even part of our culture." "People aren't even celebrating, it's just an excuse to go crazy in public."

While Shibuya Ward Mayor Ken Hasebe has said he does not want to limit the event and hopes for it to grow, it seems that if incidents such as this past weekend continue to escalate, the celebration could become very heavily regulated by police or measures to prevent it taking place at such a large scale could be put in place.

Hopefully, things get under control and we can leave the only regulation necessary is the Tokyo Metro system's series of comical posters (in English and Japanese) titled "Please do it at home!"