Is it possible to consider that in the Middle Ages opponents of the church were considered as enemies of the state?

In the Middle Ages, heretics were viewed as political criminals. In the Christian kingdoms, state power was based on the power of the Church, and both powers consisted of an indissoluble unity. Therefore, every attempt on the Church was recognized as an attempt against public peace and against state power. The state punished the guilty as rioters and traitors: confiscation of estates, life imprisonment, and even death by burning at the stake. Such a severe punishment for heretics can only be justified by the character of the sects of that time, which did not restrain themselves in hatred and set themselves the goal of the complete extermination of Catholic Christians.