Although It was Mark Antony that made the action to get revenge on caesar, It was Brutus and the conspirators that caused the conflict. This civil war caused the death of more than just Caesar but to many soldiers. He caused an entire city to turn against their leaders and rebel.
Brutus may have said that his actions were for the good of all of Rome, but even a villain can backup his motifs. “Brutus: If then that friend demand why Brutus rose against Caesar, this is my answer: Not that I loved Caesar less, but that I loved Rome more” (Act 3: Scene II: Lines 20-24). During the end of the play, Mark Antony, the leader of the opposing army and Caesar's friend, admitted Brutus as being the Noblest Roman of them all: “Antony: This was the noblest Roman of them all. All the conspirators save only he Did that they did in envy of great Caesar; He only, in a general honest thought and common good to all, made one of them.” (Act V: Scene 5: Lines 68-72). Brutus did believe that his actions were for the good of the people and what he was doing was for the good, but that was where he strayed off of the path of justice.
As expressed, Brutus is a bonafide Villain. He Betrayed his best friend, killed him, and started a civil war which ultimately ended in his suicide. Was he really