December 2: Aviary by Lysley Tenerio. Published in the Manila Noir Anthology so not in the tagged short story collection
A mall has put up a sign that says poor people are not allowed to enter. Some kids see this and decide to take revenge on the mall
‘But their window displays perturb us [...] they‘re all headless, and we don‘t understand this. So we step inside [...]. “Can I help you?” she asks [...] and we ask: where are the heads?‘