There are some academic articles on it… if forget where I read about it. But just to say - in the Meiji period, the government decided to try to totally wipe out Buddhism in Japan. They created a new kind of Shintoism, State Shintoism maybe it’s called, with the emperor as god. Ironically, emperors had always had Buddhist funerals so far as I know! But the Meiji period was a big time of change. They made everyone register with a Shinto temple (similar to when in the… 1600’s? they made everyone register with a Buddhist temple when they made Christianity illegal), and they had local gods to believe in. And the gods were put in a spiritual hierarchy, with the emperor being the top god they were all under. And of course, there was a branch of government with was the ‘voice’ of the emperor. So, it was a very convenient way for the government to control the people.
This also became quite racist. Japan was the land of god, and the Japanese, the people of god. This put non-Japanese as categorically superior, which seems to have helped in the committing of huge massacres of Chinese in the imperial wars that followed. Dehumanising the enemy is ‘great’ for imperialism.
Getting rid of Buddhism also meant getting rid of Chinese influence. They got Buddhism from China (largely via Korea), so they termed Buddhism as a ‘foreign impurity’ or stain, sullying the Japanese nation and culture. And the Japanese being categorically superior to all outsiders, meant (or justified) getting rid of such toxic elements.
Ironically, their Shintoism was full of Confucianism! And created by many people who were scholars of Confucianism. Hence the rigid role of classes and duty and so on. So there really is no logic to their position.
So, they tried for a while in this eradication campaign, and did even entirely close down a number of entire schools of Buddhism - I did not know that happened to the Risshu school, though I know it happened to the Fuke school, which had shakuhachi music as their central activity (which I teach). Very troubled history!
Some of their excuses for doing this did have some validity to them, however. They had complaints about the hypocrisy of the Buddhist institutions, and their corrupt character and activity. And these cannot be dismissed. indeed even today, Buddhism in Japan seems to be primarily about funeral business. They have a monopoly on funerals, and the costs are very high. The business is inherited by the son usually, and these are all priests, not monks, although unfortunately they are usually called ‘monk’ in English, which naturally makes people assume they belong to the monastic order which the Buddha created. They might be surprised to know these are business men who when off work dress in ordinary lay clothes, and have a family!
So in some way perhaps it’s natural, when an organisation takes advantage of society too much, and embodies too much hypocrisy, that the society will eventually fight back. That’s not to say that I support the government efforts. But the whole situation was rather messy. I think for Buddhism to survive well in a society, then the institution should be dedicated to non-harm, and benefitting society, at the very least by focusing on mind training and right action.