Octavian, Mark Antony and Lepidus have secured their alliance against Caesar's assassins, and since they have control of Rome, it's time for them to get rid of any competition. Proscribing an enemy means they will likely be executed, and their personal fortunes can be confiscated and put towards paying soldiers - and the second triumvirate make full use of this.
Part V of 'The Liberator's War'
Guest: Assistant Professor Zachary Herz (Legal Historian, Department of Classics, University of Colorado Boulder).