Some members have been involved in free speech controversies. Northwestern University professor Laura Kipnis was condemned by some students for her 2015 essay “Sexual Paranoia Strikes Academe,” in which she challenged the school's banning of teachers and students dating each other. Steven Pinker, the Harvard professor and best-selling linguist, was criticized by members of the Linguistic Society of America in 2011 for alleged insensitivity to racism and sexism. (The group's board defended Pinker, declaring, “It is not the mission of the Society to control the opinions of its members, nor their expression”). Credit: AP This image shows the logo for the newly formed Academic Freedom Alliance. Launched Monday, the alliance arose out of discussions among some Princeton University faculty members over how to counter what they see as growing intolerance of differing viewpoints. (AFA via AP)