“On Saturday, with the help of the Public Art Fund, the artist Allison Smith and more than 100 other artists commandeered [New York’s] Governors Island to create a kind of conceptual art version of day camp. Or maybe a Dadaist’s dream of a craft fair. Or else a mini-Woodstock in which music was replaced by artists taking the stage in mock-military style to declare that they were fighting for causes like “sequined religious figures,” “the right to sing sentimental songs in full,” “the right to be scared” or more straightforward causes like financial support for AIDS research and ending overfishing of the oceans.”