Since Sokka Gakkai was excommunicated in 1990 (the official year of excommunication was in the following year, 1991), they spent much time and energy attacking Nichiren Shoshu Sect, and their point of view is that it is important to 'attack the opposition to Buddha,' and they repeatedly wrote slander and gossip or invasion of human rights in their in-house magazines such as the Seikyo newspaper, and there is repeated severe slander towards the high priest including former Hoshu, Nikken.
創価学会は、1990年（平成2年。正式な破門は翌1991年）に日蓮正宗に破門されて以来、日蓮正宗への攻撃に多くの時間と労力を費やしており、「仏敵を責めること」が重要であるという立場から、聖教新聞などの機関誌では連日のように日蓮正宗への誹謗中傷や人権侵害を繰り返しており、特に前法主日顕を含む高僧に対しては、とりわけ激しい中傷が繰り返されている。