Conversation with locals
This applies to all Italy in general. Conversation with locals: Sometimes non locals think that Italians are mad or angry when talking to each other. It is a custom among Italians to speak very loud.
One would think they're yelling or some sort when they are not. At times arguments heat up and people say what they think and trying to convince the others that they're right and the other is wrong. In this case they raise their voices and often the loudest person is the one who is right and the others have to listen to that person.
Do not get intimidated by this! If you join a conversation of Italians, just use the same tone of loud voice they do. They will have no problem with it.
Read about some rather interesting Italian customs in the web page below. See URL.

Sicilian interior
Temple of Herakles
downtown street
S, Nicolo- the way into the museum area