For example, graffitis have not been conceived the same way between Barranquilla and Bogota. In our city we can see a lot of draws not finished and carnival graffitis everywhere. Thats because government just support graffiti on culture representations with folklore meanings, but in bogota, a few campaigns support graffiti's artist giving them different spaces to express their messages with freedom.
We can see a lot of differences between Argentinan and colombian culture in their street art. Actually in Argentina people have adopt graffiti as a way to decorate streets and make the city an art gallery, but Bogota see on graffitis a way to express disagreement with standard ideology and political nonconformity for example.
My point is, in conclusion, graffiti isn't just a way to express a thinking of the artist, or send a message. Graffiti express too the way of living of the city, the culture and ideology of people.