Answer:
Brutus is considered both the protagonist and the antagonist because he kills Caesar, a tyrannical leader, to save Rome, but also because he murders Rome´s leader.
Step-by-step explanation:
Brutus is the protagonist and antagonist of William Shakespeare´s "Julius Caesar". His conflict is internal because he debates between the love he feels for Rome and the love he has for Caesar. Eventually, his fear of what could happen if Caesar stills alive was bigger than anything else and ends participating in the conspiracy to murder Caesar.
Internal conflicts are very important in literature because they demonstrate the character´s moral characteristics. Brutus was not a bad person, he wanted what he thought was best for Rome.
I hope this answer helps you.