In act 2, scene 1 talk about what, or what is the purpose of this conversation between Brutus and his friends ?

Cassius, Casca, Decius, Cinna, Metellus and Trebonius, all of them conspirators against Caesar, have arrived at Brutus' home. Brutus invites them in and Cassius takes him aside. Soon Brutus rejoins the group of men and shakes all their hands, agreeing to join them in their murderous quest. The men then discuss whether they should invite Cicero, the great orator, to join their plot, but Brutus convinces them against it. Cassius states Mark Antony should be killed along with Caesar, but again Brutus is against the plan, fearing they will be perceived as too bloody.