[AstralStorm]

This is unconstitutional way of limiting movement, even by Japanese Constitution which is lax, and not allowed by statute for police operations.

Restraining movement does not require enclosure or other technical means, yet is still illegal. Police can literally stop you for a few reasons and no more.

If you literally tell the police to move away because they're illegally preventing you from moving in clear terms, if they hit you while you push through they're committing assault. Treat it like any other police brutality in court.

The first thing you have to do in this abuse of power situation is to get evidence, and by stupid Japanese law you're not allowed to take photographs of policemen I think, so get something else, like sound recording.

Suing them would be a fun pastime for someone rich, and a way to get the prosecutor to throw the case.

Of course of they really want you for something illegal, they will get you in some other way.