3 Answer the following questions about the text. a Which Latin American countries are going to be represented in the event? b What is the name of the Brazilian artist invited to take part in the event? What kind of art does he do? c Which of the activities mentioned in the text can be associated with socio-political messages? d Reflect on how the terms "free speech" and "margin" are used in the text. How do you think they relate to graffiti art? Justify your answer.