Quick answer:

Antony's speech has a very logical argument. It is not, however, a rational argument that would convince some people, who have other ideas about what Caesar was like. For example, Antony says that Caesar cared for the poor. But many people in Rome may have thought that Caesar was so indifferent to the poor that he was arrogant and uninterested in their problems. Antony also states that Caesar wanted no power for himself (thus not being ambitious). However, many people believe this is why he wanted to be king--he wanted more power than he had as consul of Rome. Antony uses rhetorical questions throughout his speech to stir up emotions--to anger the crowd against Brutus and his followers: "O masters!