U.S. Rep. Alexandria Ocasio-Cortez was shouted down and faced a partially hostile crowd during a Friday town hall where some participants were upset about the Democratic socialist legislator’s positions on immigration Ukraine funding and the debt limit.Speaking to constituents in Corona, Queens, The “Squad” member was disrupted several times as some heckled and booed her, and in turn, her supporters shouted down those protesters. “American citizens before migrants,” one man shouted as he walked toward Ocasio-Cortez holding small American flags. “Where are you on the migrant issue? You’re a piece of s–t.“AOC’S TWEETS ATTACKING CNN ‘PUMPED UP’ TRUMP DURING TOWN HALL: RE …