"We had to text his professor and ask him to please take some pictures of him," one student's mom said. "It's hard not to cry"Credit: gettyNEED TO KNOWFamilies of graduates were turned away from North Carolina State University's Department of Biological Sciences' graduation ceremony on Friday, May 8The school is now apologizing after hundreds couldn't get into the event and were told to instead watch a livestreamSaid one mom of a student: "We ha…