Two off-duty female cops yelled, "We are the police!" - and then pistol-whipped a Bronx man in what authorities call a case of road rage. NYPD Officers Michelle Anglin, 37, and Koleen Robinson, 24, were charged with assault, gang assault and criminal possession of a weapon for the Williamsbridge beatdown. It took 25 staples to close the gash in Marlon Smith's head, authorities said. Smith, 35, had pulled up alongside Robinson's black Suburban with his driver's side car door wide open as the two cars sat near E. 218th St. and White Plains Road at 5p.m. Friday. "Close the door,...