οἷς πρόθεσίς ἐστιν ἀδικεῖν, παρ' αὐτοῖς οὐδὲ δικαία ἀπολογία ἰσχύει → not even a just excuse means anything to those bent on injustice | the tyrant will always find a pretext for his tyranny | any excuse will serve a tyrant
Use adj., P. and V. κακοῦργος, or use participles of verb sin, P. and V. ὁ ἁμαρτάνων, ὁ ἐξαμαρτάνων.