New York City Mayor Zohran Mamdani is facing backlash after urging residents to set their air conditioners to 78 degrees as a major heat wave approaches. Mamdani says the voluntary measure will help reduce strain on the city's power grid and keep electricity flowing during extreme temperatures. But critics on social media quickly pushed back, arguing New Yorkers shouldn't have to sacrifice comfort while questioning the city's energy priorities. Here's what Mamdani said, why the request sparked outrage, and how people are reacting online.