Nearly two years earlier,( Nikki ) Giovanni had stood up to Cho Seung-Hui ... He wore sunglasses to class and pulled his maroon knit cap down low over his forehead. When she tried to get him to participate in class discussion, his answer was silence. "Sometimes, students try to intimidate you," ... "And I just assumed that he was trying to assert himself." But then female students began complaining about Cho. About five weeks into the semester, students told Giovanni that Cho was taking photographs of their legs and knees under the desks with his cell phone. She told him...