All the people of Rome are celebrating Caesar's victory over Pompey. Flavius and Marellus are angry because they think that people are being disloyal to Pompey just because he lost.
The soothsayer is warning Caesar about the ides of march but Caesar does not takes it seriously
Calpurnia
Casca saw dangerous things on the street lately. Ex: A man with his hands on fire. He says that these signs means something bad is going to happen in the future.