Cassius is too hungry for power
He says he is not well in health (that he is sick).
To protect Brutus. If the soldiers killed him, Brutus would be safe.
Brutus was Caesar's protege.
There was no objection, but the word genocide was not created till 1943 ...
Brutus's army has lost. Lucilius offers to take Brutus's place when the conquering armies arrive.
The complaint Cassius has against Brutus is that Brutus has not been himself lately. Brutus tells Cassius that he has conflicting thoughts but they will not interfere in their friendship.
brutus explains ceasar is greedy for power and wealth also as he describes ceasar in the movie and book as a ambitious person
He says he is not well in health (that he is sick).
He found it necessary to kill Caesar because the other senators persuaded Brutus to join and he did not like his behavior.
I have an objection to the vagueness of your "question."
One major objection to the early Skinner approach to psychology was the perception that it oversimplified human behavior by reducing it to a set of stimulus-response relationships without fully considering internal mental processes or cognitive factors influencing behavior. Critics argued that it neglected the complexity and richness of human experience and behavior.
If you do no have any objection it means that you are not against something
sustain
Strato holds the sword for Brutus while Brutus runs into it, but Strato asks Brutus to shake his hand first, which Brutus did.
There does not seem to be a standard form the no objection certificate. The link below has many examples of no objection certificate.
Portia, Brutus's wife, is worried about Brutus because he is hiding a secret from her.
The objection is sustained.