@Grano-Grano Whole thread is going to be trash, they're Sigma Pi Phi, a Black Greek-letter organization, with noted similarities to Alpha Phi Alpha and Alpha Kappa Alpha collegiate Greek-letter organizations.
They're compromised almost entirely of upper-middle class to upper-class African-Americans who are white-collar professionals and/or entrepreneurs.
They act as a giant Black network and social organization, and have fairly illustrious alumni, Dr. MLK Jr. Thurgood Marshall, WEB Dubois, Ron Brown, etc.
Most of this misinformation is going to come from non-Greek-letter brehs, or seemingly bitter non-college graduates. Research is fairly easy, or you could go to their website, talk to a APA/AKA, check out one of the few good books, etc.