Not for nothing, but the actress whose photo appears in the article did not look to me to be a person of color so I guess she is biracial.
This reminds of the casting call for Hamilton a couple of years ago which essentially said white actors need not apply. Although they reversed their position, I have decided not to spend my hard earned money seeing that particular show.
I personally think that the best actor should be chosen for a part, race blind, unless the part is clearly meant for a particular race. For instance, while it might be interesting to see Mel Gibson play Martin Luther King, Jr., that casting would clearly be a distraction. If the white girl was the best actress the school had, then she should have gotten the part. If she got the part just because she is white, that’s wrong and is a different issue.
I also think that people who threaten others on the internet are lame losers.