The last days of the Taisho Democracy would seem to be ripe for such an event. Particularly if the Peace Prevention Law were not introduced; the law was designed to supress Communism but effectively but was an effective way of suppressing all anti-government political parties. Sometime before the Kempeitai had such a pervasive presence in Japanese society.
A later alternative would be the Young Officer’s Revolt, also called the February 26 Incident, of 1936.
Peace Preservation Law was passed only along with the suffrage reform. It was to prevent revolutionary and anti-system parties from gaining any of the advantages of the new universal (male) suffrage system, and without such guarantee to the system, the universal suffrage wasn't going to be implemented. Let's remember that the PPL was implemented by fairly liberal Kenseikai government.
In the last days of the so-called Taisho Democracy, whole the nation was clearly shifting to the right, not to the left. When the capitalism failed the people turned to the Emperor and old ideas, and marxist socialism was rejected and denounced as just another western rotten idea. Far-right groups were persecuted, but when they were brought to the court, literally hundreds of appeal letters were sent to the court. During the trial of the League of Blood the court received a million of appeals including 350000 signatures written in blood.