Complex sentence: Contrary to popular belief, AZA was not founded in a form of protest against Greek fraternities, rather, conversations with the founding members years later revealed that the organization's name was chosen specifically in an attempt to mimic Greek fraternities... not to protest them.
Split into simpler sentences: Contrary to popular belief, AZA was not founded in a form of protest against Greek fraternities. Rather, conversations with the founding members years later revealed that the organization's name was chosen specifically in an attempt to mimic Greek fraternities--not to protest them.