Tiberius and Caius Gracchus (Caius.18.1)

And yet this Opimius, who was the first consul to exercise the power of a dictator, and put to death without trial, besides three thousand other citizens, Caius Gracchus and Fulvius Flaccus, of whom one had been consul and had celebrated a triumph, while the other was the foremost man of his generation in virtue and reputation—this Opimius could not keep his hands from fraud, but when he was sent as ambassador to Jugurtha the Numidian was bribed by him, and after being convicted most shamefully of corruption, he spent his old age in infamy, hated and abused by the people,