1.Modern graffiti began in big cities in the United States, specifically in New York.

2.Demetrius's tag was TAKI 183.

3.Young people wrote their own tags on walls, buses, and subway trains in New York.

4.Aerosol paint graffiti became popular in the 1970s and 1980s.

5.In graffiti zones, artists can paint on walls. For example, in Taiwan, there are specific 'graffiti zones' where artists can paint.