Complex sentence: Tēraudkalns (2003) suggests that these structures of oppression are self-sustained by internalized oppression; those with relative power tend to remain in power, while those without tend to remain disenfranchised.
Split into simpler sentences: Tēraudkalns (2003) suggests that these structures of oppression are self-sustained by internalized oppression. Those with relative power tend to remain in power, while those without tend to remain disenfranchised.