治安维持法
In the midst of this political ferment, Hara was assassinated by a disenchanted railroad worker in 1921. Hara was followed by a succession of nonparty prime ministers and coalition cabinets. Fear of a broader electorate, left-wing power, and the growing social change engendered by the influx of Western popular culture together led to the passage of the Peace Preservation Law in 1925, which forbade any change in the political structure or the abolition of private property.