NEW YORK -- The NYPD entered Columbia University to clear out protesters Tuesday night. The move came after a massive police buildup Columbia University Tuesday and Mayor Eric Adams issued a stern warning to protesters to "leave the area." It all comes on the heels of demonstrators occupying a building overnight, prompting the school to threaten them with expulsion. Columbia warned students at the Morningside Heights campus to "shelter in place for your safety" amid the heightened police... Read this story