Constantine made Christianity Romes official religion. The Christians started to kill non-Christians. The entire religion of Christianity got distorted and ruined by becoming the official religion of the Roman Empire.
First Roman emperor to be a Christian. The persecution of Christians stopped while he was ruling. He commanded that all people in the empire could worship any god they wanted.
They always used violence as a solution. All of the emperor kept being assassinated. The Emperors would steal from the treasury for parties and more. When it was time to pay taxes they did not even want their own money they wanted a different countries money.