Two teenage girls were randomly stabbed while enjoying a Christmas morning meal with their parents at a Grand Central Terminal restaurant — with their deranged attacker now facing attempted murder charges, authorities said. The girls, a 14- and 16-year-old visiting from South America, were attacked at Tartinery in the Grand Central Dining Concourse around 11:25 a.m. Monday and suffered non-life-threatening stab wounds, WABC-TV reported. The suspect, 36-year-old Steven Hutcherson, allegedly attacked the tourists after getting into a dispute with restaurant staffers who were trying to kick him out of the eatery, the outlet reported. “I want all the white people...