February 24, 303
Galerius signs an edict bringing the Diocletianic Persecution to the region under his rule
The Diocletianic Persecution was the final persecution of the Christians by the Roman Empire. It not only demanded Christians practice sacrifices to Roman gods but stripped them of most of their legal rights. Those who refused to honor the old Gods were subject to imprisonment and execution. Some of these executions were turned into public entertainment such as feeding the condemned to lions (as pictured).
Strangely, it was also Galerius who, when he ascended to Emperor, ended the Persecution in 311 through a separate edict, though some regions continued the practice for decades after.