One Friday morning earlier this summer, 16-year-old Gloria Vega was selling candy to commuters on one of midtown Manhattan’s busiest subway platforms when a woman approached her and demanded she hand over all of her packets of M&M’s. “She looked completely crazy,” Gloria said in Spanish, her voice trembling and tired, “and she told me she would hit my baby.” She pointed to her infant daughter, Yuleidys, who was wrapped tightly in a shawl on her back, her jet-black hair sticking up in three short pigtails with red, yellow, and blue scrunchies. “Of course I gave her the M&M’s.” The...…One Friday morning earlier this summer, 16-year-old Gloria Vega was selling candy to commuters on one of midtown Manhattan’s busiest subway platforms when a woman approached her and demanded she hand over all of her packets of M&M’s. “She looked completely crazy,” Gloria said in Spanish, her voice trembling and tired, “and she told me she would hit my baby.” She pointed to her infant daughter, Yuleidys, who was wrapped tightly in a shawl on her back, her jet-black hair sticking up in three short pigtails with red, yellow, and blue scrunchies. “Of course I gave her the M&M’s.” The...WW…