Your ignorance really shows. I think I know a little something about big southern universities--I'm an alum of UGA, class of 2001. I also know a little something about the NPHC groups. One of my friends my freshman year was a sister of Sigma Gamma Rho. They do quite a bit of service in addition to the stepshows and parties at the nightclubs you talk about. I remember a workshop in the dorms about campus safety sponsored by her sorority and the UGA police department. There was also a panel discussion in the dorms about the differences/similarities between "white greeks" and "black greeks". It was really interesting and brought up many of the points discussed in this thread. During spring semester, all of the girls on my hall attended the step show to support our friend in SGR. Despite the notion of a "thuggish/street gang" atmosphere, it was anything but. My friends and I had a great time supporting our friend and nobody got cut, mugged, or stabbed. Gee, what a surprise!
Now that I'm a teacher, I work with several women who are active members of graduate chapters of Alpha Kappa Alpha and Delta Sigma Theta. They still do active service projects, such as a science camp for teenage girls. Anything thuggish about that? And my experience is by observation only--I'm a member of a "white sorority"