FYI: I only went once, they were not allowed to get into Harvard yard – so now it is only students who gets to sleep inside the yard, a classmate told me he slept there yesterday-see:
http://blogs.law.harvard.edu/fensterm/2011/11/10/occupy-harvard-claims-the-old-yard/
http://hpronline.org/harvard/a-message-to-the-harvard-community-from-occupy-harvard/
http://occupyharvard.tumblr.com/post/12717613464/a-letter-to-harvard-students
http://news.harvard.edu/gazette/story/2011/11/message-to-the-harvard-community/
http://www.thecrimson.com/article/2011/11/9/occupy-protest-shuts-down-harvard-yard/
http://www.thecrimson.com/article/2011/11/14/occupy-security-administrators-tension/
http://www.thecrimson.com/article/2011/11/14/occupyyardmorningafter/