Most people believe that being in a fraternity or a sorority will increase their social life on college campuses, which in most cases is true. But unfortunately people who are interested, have to go through the "pledging process" Usually pledges are Hazed during this process. It varies in between what college you attend. But for the most part, the Fraternities which consists of males do physical abuse. Here is an Article from the New York times talking about a few cases that have cause Chapters of a specific Fraternity/ Sorority to be suspended from campus and sometimes... completely expelled. 

http://www.onlinecolleges.net/2009/11/29/top-10-worst-greek-hazing-scandals-stories/