Discuss the dramatic irony in Julius Caesar

Dramatic irony is the soul of a tragedy. It is a form of situational irony that involves the audience's awareness of a character's real situation before the character.  In other words,  it is a dialogue or situation which conveys one meaning to the character or characters on stage and a different meaning to the audience. It is used both in tragedy and in Comedy to heighten respective effects. 

The is an abundant use of dramatic irony in Julius Caesar by William Shakespeare. In the very beginning in reply to Caesar's remark that men like Cassius are dangerous. Antony replies -

'' Fear him not,  Caesar,  he's not dangerous. ''

Cassius suggests that Antony should also be killed along with Caesar,  In reply to him, Brutus says that killing Antony along with Caesar would mean cutting the head off and then cutting the limbs. Dramatic irony is employed in Portia's assertions of her course and strength. Then is dramatic irony in Caesar's own remarks. There is a dramatic irony in his dismissing the soothsayer who has warned him to beware of the ides of March. Subsequently, the soothsayer's prediction will prove to be perfectly true. Caesar rebukes his Calpurnia in the following ways-

' How foolish do your fears seem now'!

Actually, her fears prove afterward to have been fully justified.  Caesar is brutally killed. 

Thus dramatic irony plays a very powerful role in Julius Caesar. Shakespeare has employed it in this play in profusion. His dexterity in this respect is unquestionable.