in miami last fall, amid news that corrupt housing authorities and developers had deprived thousands of poor people of promised homes, Ivan Martinez began projecting immense images against the walls of the luxury towers that have sprouted with wanton ambition in the footprint of demolished low-income housing. No one commissioned these images; Martinez is a guerrilla artist, an outlaw. As governments across America have imposed increasingly harsh penalties against postering, graffiti, and their requisite tools (New York has made graffiti-writing a felony in some instances, as has Ohio, convicting a man for spraying "Troops Out Now" on a highway overpass; Richmond, Virginia, threatens its citizens from the backs of buses, "Use a spray can, go to jail"), wall-size projections have developed as a fleet-footed alternative. One of Martinez's ephemera featured a running silhouette crying, "Gentrification!!!!" Another showed a man saying, "I love downtown's revitalization, but where are the poor people?" One night as Martinez and two friends were projecting from a moving car, police pulled them over and pointed guns at their heads. He hasn't done a projection since.