国有国法 家有家规 The issue is of harassment and continued education at Purdue; not constitutional rights. It sounds like the pro China students were harassing Zhihao

国有国法 家有家规 The issue is of harassment and continued education at Purdue; not constitutional rights. It sounds like the pro China students were harassing Zhihao Kong. Purdue can decide what constitute harassment. 100% it's part of of every contract the student signs and agrees to as a part of their acceptance.