Since its inception, Pussy Riot (Nadya Tolokonnikova, Maria Alyokhina, Yekaterina Samutsevich, et al.) made the balaclava a trademark, but I couldn’t help being reminded Friday night—at the demonstration-vernissage-performance of Nadya’s Pussy Riot Putin’s Ashes show at Jeffrey Deitch Los Angeles—that it also served an entirely utilitarian purpose as an essential mask or camouflage.