The terms "racist" and "sexist" have been thrown around so much in the last decade that they've practically lost their meaning. Almost to the point where, if you believe in critical thinking, you don't want to be the person that doesn't get called those terms. I'm sure the alumni office has received the position of the disgruntled several times, and I'm fairly certain they're just being circular filed. It seems the only reason that letter was sent to the alumni was because of the media backlash and trying to get in good graces. Reminds me a bit of the aftermath of the 2014 Mayor's Cup.
Oh, by the way, tweeting means transparency. You actually know what the person has in mind.