Actually, UNF Sigma Chi, I kind of asked the same question in another thread under SOCIAL, where I wondered if a Pimps and Hoes Party was disrepectful. Maybe universities have become too "Politically Correct", but campus life isn't what it was 20 or even 10 years ago. Your school is not the only one that has this situation-it happens at my school, and at schools all across the country. And if it hasn't affected a certain school yet-believe me, it will.
Campuses these days are more diverse than ever-racially, ethnically, sexually, and socio-economically, and issues that were not really addressed previously are now in the forefront. Underage drinking, binge drinking, date rape, racial and ethnic and social sterotyping- these are some of the topics that are important on campus, and unfortunately, by having parties like these, doesn't reflect positively on Greek life in the eyes of some, because they may have the misguided notion that we (GLO members) contribute to these things. And let's face it, we ARE an easy scapegoat because those who are not us, will NEVER understand what it is like to be Greek. So it's always, "There goes those damn (insert fraternity/sorority here) again. They are all so (rich/blonde/stupid/jockish/preppy/stuck-up...you get the idea)".
But with that, it doesn't mean that a fraternity/sorority can't have a theme party without offending someone or some group-just be creative in what you call it, and how it is advertised. I mean, one fraternity on my campus had an "Age of Aquarius" party- very San Francisco/Haight-Ashbury/ 1967ish, which was well attended, and no one was offended, even though the original time of the "Summer of Love" was full of drug use!
So, hang in there UNF Sigma Chi...I know that you and your brothers will be able to have fun DESPITE the best intentions of the university. Don't boycott, but when you graduate (and you will graduate, right?), and you start getting those letters in the mail that start, "Dear Alumnus..." , asking you to contribute to the school's endowment, tell them that you're giving your money to where it belongs-the Sigma Chi chapter of UNF!