A mural by the Brazilian street artists Os Gêmeos, installed in Boston as part of their first US solo show at the Institute of Contemporary Art, has drawn some divisive comments and stirred up debate about cultural understanding.

The twin brothers painted the 70-foot-tall mural The Giant of Boston depicting a boy wearing a red jacket wrapped around his head in the city’s high-traffic area of Dewey Square (the figure of a shrouded graffiti tagger is a common motif in the artists’ work).