Christianity was booming during the reign of Emperor Tiberius. Scholars believe Christianity became widespread with the teachings of Jesus of Nazareth, who died via crucifixion sometime between 30-33 AD. To be a Christian during the reign of the Roman Empire was chancing a death sentence. Christians believed in only one god, whereas Rome was a polytheistic society.
The persecutions of Christians happened mostly because their beliefs rejected Roman gods, including their emperor (emperors thought they were incarnate gods). As a result, Christians refused to make the required sacrifices. To demonize practitioners and the Christian faith as a whole, the Roman Empire did something nefarious. To dissuade the empire from entering Christianity or pitying followers, Roman leaders actively defamed Christians by spreading rumors, one of which claimed Christians were cannibals.