Which incident in act 3 in Julius Caesar affected the audience the most?

In Act 3 of Julius Caesar, the assassination of Caesar is the pivotal incident that profoundly impacts the audience. The brutal and public nature of his murder, particularly the moment when Brutus delivers his famous line, "Et tu, Brute?" highlights the betrayal felt by Caesar and evokes sympathy from the audience. This shocking act not only marks the turning point of the play but also sets off a chain of events leading to chaos and civil strife in Rome, leaving the audience to grApple with themes of loyalty, power, and the consequences of political actions.