They want Brutus to help them.
Brutus
There were 60 conspirators, led by Brutus, of which at least 23 stabbed him. Julius Caesar was murdered by Brutus, Cassius, Ligarious, Metallus, Casca, Trebonius, and Cinna. Studies have shown that he was left with 37 wounds
Cassius forges several letters from commoners and states inside them how Caesar is not a good ruler and how Brutus is the one that should be in power. Cassius then gives his letter to Cinna to deliver to Brutus in hopes of persuading Brutus to take action against Caesar.
"Good Cinna, take this paper, And look you lay it in the praetor's chair, Where Brutus may but find it; and throw this In at his window; set this up with wax Upon old Brutus' statue; all this done, Repair to Pompey's porch, where you shall find us." (1.3 lines 142-147) The three messages Cinna is to make sure Brutus gets are to encourage him to oppose Caesar's ambition.
They want Brutus to help them.
No cassius, brutus' brother-in-law talks brutus into joining the conspiracy
brutus, cassius, casca, cinna
Brutus
There were 60 conspirators, led by Brutus, of which at least 23 stabbed him. Julius Caesar was murdered by Brutus, Cassius, Ligarious, Metallus, Casca, Trebonius, and Cinna. Studies have shown that he was left with 37 wounds
Cassius forges several letters from commoners and states inside them how Caesar is not a good ruler and how Brutus is the one that should be in power. Cassius then gives his letter to Cinna to deliver to Brutus in hopes of persuading Brutus to take action against Caesar.
The group of conspirators consisting of- Brutus, Cassius, Casca, Cinna, Aemilius Lepidus, Decius Brutus, Trebonius and Ligarius.
"Good Cinna, take this paper, And look you lay it in the praetor's chair, Where Brutus may but find it; and throw this In at his window; set this up with wax Upon old Brutus' statue; all this done, Repair to Pompey's porch, where you shall find us." (1.3 lines 142-147) The three messages Cinna is to make sure Brutus gets are to encourage him to oppose Caesar's ambition.
He was a conspirator against Caesar and he planted the forged letters for Brutus to see.
If you are talking about the play Brutus Caesar Cassius Cinna the Poet The conspirators
cassius,casca,decius,cinna,metellus,trebonius,brutus, and ligarius.
the praetor's chair, old brutus' statue & in at his window.