In a 2010 speech by Sen. Ted Cruz (R-Texas), claimed that during his days at Harvard Law School, the faculty included twelve Marxists. Cruz's was giving voice to the same basic charge of academic bias leveled by William F. Buckley in his classic 1951 book, God and Man at Yale, one widely shared on the political right.
There, academia is viewed as a liberal bastion. Furthermore, it is seen as a place of deep ideological bias against conservatives and even, as Cruz's words suggest, of outright radicalism. Finally, it is seen as a brainwashing mill, intent on wiping away our children's values, and turning him into, gasp, now this is really scary, a liberal!
Harvard, now didn't Obama attend Harvard. Hmmm.