Complex sentence: The stereotype is two-fold in that it incorporates both positive and negative traits: "Hillbillies" are often considered independent and self-reliant individuals that resist the modernization of society, but at the same time they are also defined as backward, violent, and uncivilized.
Split into simpler sentences: The stereotype is two-fold in that it incorporates both positive and negative traits. However, they are also defined as backward, violent, and uncivilized.