Answer:
Brutus is strongly against corruption and bribery.
In Act IV, Scene II, Cassius is reproaching Brutus for accusing one of his men of taking bribe, although Cassius asked him not to do it. After that, Brutus realizes that Cassius is also corrupted and he also takes bribe, which makes him disappointed at Cassius.
Brutus mentions him the Ides of March and mentions that they killed Caesar because they thought he was corrupt. Now Cassius exactly as Caesar, which makes him and Brutus hypocritical, because Cassius converted into something they tried to eradicate.
