Roman emperor Julian issues a new law eliminating special public service exemptions which had been created for Christians by previous emperors.
Emperor Julian becomes known as "Julian the Apostate" and is the last non-Christian ruler of Rome. One of his primary goals is to restore ancient Roman traditions and religion at the expense of Christianity.
According to Julian's new law:
"Decurions who evade their compulsory public services on the ground that they are Christians shall be recalled" [CTh 12.1.50]
A "decurion" here means a local administrative official. In addition to monetary taxes, the Roman state can demand from citizens acts of public service like holding such offices. Decurions are responsible for preserving public order, ensuring for entertainment, and maintaining religious rituals.
Being a decurion can be a significant personal expense and being exempt from serving as a decurion creates significant benefits for Christians. It was, in effect, a reverse tax on pagans — not only did they have to serve as decurions while Christians did not, but they had to do so more often because without Christians there were fewer people eligible for the office.