IIRC Japan's Communist Party is the largest party in terms of membership and power despite getting no votes during elections, like they have control of the press and the schools. The thing is they know that literally anything Communist or even Leftist related happening at all will result in Japan becoming a shithole. So they do nothing at all besides say Japan shouldn't have an army that goes about Making Manchukuo Great Again.
They're like the only Communists that want there to be an Emperor and for there to be a Religion for the nation the Emperor rules over.
There have been a few times in which Leftists have done riots, and when they do they go full on Medieval in which everyone is armed with motherfucking battering-rams and metal pipes (To bypass the police armor by causing blunt-damage to the police I think, plus it's extremely readily available) in addition to having logistics so they wouldn't run out of rock ammo to hit the police along with being uniformed and having protection gear including gas-masks and charge at the police Braveheart style and they even create fake Fire Engines to get pass the police to blow up motherfucking Airport towers.
None of the sissy BS that ANTIFA does in short.
https://translate.google.com/translate?hl=en&sl=ja&u=https://ja.wikipedia.org/wiki/10.20%E6%88%90%E7%94%B0%E7%8F%BE%E5%9C%B0%E9%97%98%E4%BA%89&prev=search
Some footage with music: