What happened in a corner of the demonstration site.

In Japan, plainclothes police officers are always present during demonstrations.
Harada has been a victim of police harassment in the past.

During the protest against Google that day, a plainclothes police officer, a man around 38 years old wearing glasses, continued to intimidate a short, elderly woman, threatening her with "I'm going to arrest you".
His comrades noticed this and ran over and surrounded the plainclothes police officer.
The plainclothes police officer behaved in an overbearing manner towards women, but was unable to intimidate many Japanese men and tall men from overseas.
This is a typical example of the unpleasant Japanese, who judge whether someone is weaker or stronger than themselves based on their appearance and gender, and act strong towards those weaker than themselves.
Harada recorded the whole incident on his smartphone in case of an unjust arrest or a trial.
In all cases, if there is no record or evidence, citizens cannot stand up against authority.

In the movie "Horizon Blue," footage was shown of luxury cars running red lights one after another near the National Diet Building.
Harada complained to a nearby police officer, but was ignored.
In Japan, politicians and those in power go unpunished no matter how badly they do things. Meanwhile, ordinary people are arrested for simply paying the wrong 10 yen.

From "Horizon Blue"(2019). An intersection near the Parliament Building.

A luxury car rushes through the crosswalk, ignoring red lights and pedestrians.A few years ago, the traffic lights at this intersection were removed. Citizens now have to take a detour to get to the Parliament Building.

At a demonstration in front of the National Diet on April 26, it was reported that citizens can freely enter the New Zealand Parliament Building and that there is even a park.