There has been more than one case of blacks trying to set up stunts, screaming racism and then get caught in the act. Blacks may know better but that doesn't stop some of them from doing it. I will bet good money the minority group this woman belongs to is black.
You're on. I say definitely not a black, quite possibly an Asian, and most likely no malice intended, based on the following:
Location - the university library is an Asian stronghold. A genuine provocateur would target a black fraternity, diversity dorm, black professor, etc. Something unmistakable and in-your-face. Furthermore, a black perp would stick out like a sore thumb in the library, if for no other reason than their small representation at UCSD (2%).
Candor - she came forward and admitted what she did. Let's just say that some groups are more likely to take responsibility for things than other groups. And in general, people who are up to no good usually don't come out and confess to it, especially if they have not been caught yet.
Cover story - if this was a staged "civil rights" incident, the perp would have claimed she did it to "raise awareness of racism on campus, in light of that awful frat party." No way an "activist" would use the cockamamie story in the article.
Reaction - if the perp was black, the authorities would turn the incident into a "teachable moment" and shame the racist UCSD community for provoking her into finally taking action against her oppressors. Like Rosa Parks and Henry Louis Gates Jr. Instead, the perp was suspended.