 
David L. Ryan/Globe Staff
Harvard senior Sally Chen addressed a group of protesters outside of the Charles Hotel on Friday.
	By Deirdre Fernandes				Globe Staff  			
On the stand in federal court, on social media, and during  rallies, they defended Harvard University in a landmark trial over  affirmative action in college admissions last year, helping to shore up  the school’s case that it doesn’t discriminate against Asian-American  applicants.
But in recent weeks, some Asian-American  students and alumni say they have been frustrated by the glacial pace of  Harvard’s efforts to improve diversity beyond admissions. 
The  imminent departures of two Asian-American professors who specialize in  ethnic and racial studies has stunned many. The moves have also drawn  attention to the meager number of minority faculty on campus and renewed  calls for Harvard to create an ethnic studies department.
