Under Justinian—emperor from 527 to 565—cancel culture went after paganism no holds barred. One of his laws ended imperial toleration of all religions… If you were a pagan [Christian Newspeak for adept to Greco-Roman civilisation], you’d better get ready for the death penalty. Pagan teachers—especially philosophers—were banned. They lost their parrhesia: their license to teach.
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Read it all: here.