All of them have traditionally persecuted Christians, especially committed atrocities Decius. But what, every usurper required recognition of the people. For this purpose, according to Roman law, the subjects were required to worship and to offer sacrifice to the Emperor's statue, his "genius" - as Christians refused. How dare they refuse? However, the rulers had almost no time to assert his authority. On the one hand, they had to look around to the competitors, on the other - are constantly at war with the Goths and the Slavs. "Barbarians" who were willing to live under the protection of the empire, refused. Smashed and expelled them. From the ready and their allies have begun to pay off. Sometimes they scored a victory over them. But lucky commander admired the soldiers proclaimed him emperor and killed former. And if the emperor suffered defeat subordinates were angry, and killed him, too.