It has become a big clubhouse for Leftist elitists who need a place to host their disdain for lessor humans (i.e. everyone who didn't go to Harvard). It wasn't always the home for Leftist-only ideologists but it inevitably evolved into an educational entity that has shut down opposition. Just like all good Leftist entities do. Just like has happened at many universities and colleges.
There are outstanding Harvard graduates -and dropouts - who have overcome the last 20 years of Leftist indoctrination but the majority kept to their training or, at least, were unable to eradicate it with a mixture of alcohol, pills, and strenuous cardio workouts.
Look at you being outraged at privately owned institutions receiving federal money. I do believe the heart of a socialist beats under that gruff exterior. Kinda sexy, daddy.