Not to put too fine a point on it, but 20% of those admitted were Asian American, for the class of 2019, in a country where less than 5%, self-identify as Asian-American.[1][2]
https://college.harvard.edu/admissions/admissions-statistics
[1]
http://www.theatlantic.com/education/archive/2014/06/how-to-...
[2]
http://www.theatlantic.com/education/archive/2014/06/how-to-...