Excerpts from Books and Wikipedia
After defeating Pompey, Caesar was popular with the people but not with the aristocracy who dominated the Senate. The assassins in the Senate were forced to flee Rome. Mark Antony was a loyal follower of Caesar, and he took control of Rome. Pursued by the wrath of Mark Antony, Brutus and Cassius were dead within two years. [Furtado: 1001 Days]