The Economist recently printed an article about free speech on university campuses in the U.S..
In particular, they contrast thedemands.org which they say “lists speech-curbing demands from students at 72 institutions” and the Chicago Statement which argues that “[c]oncerns about civility and mutual respect can never be used as justification for closing off discussion of ideas, however offensive or disagreeable”.
Generally speaking, I am extremely skeptical about curbs on the freedom of speech, even when they have plausible justifications. People don’t have a right not to be offended, and universities must provoke thinking in order to serve their purpose.