It took Brazilian artist Iaco one minute to whip out a can of spray paint and write "doria" seven times across a gray wall in Sao Paulo.
"I'm a big fan of what they're doing in Sao Paulo. They've invented their own alphabet," said Cooper, who was introduced to
the old guard pichadores on a recent visit to Brazil.
"It's not acts of random vandalism at all," she said. "It's a way of making your environment your own."
Writing by Brad Haynes