What was the Cathars' / Albigensians' political philosophy?

What was the Cathars' or Albigensians' political philosophy? Was it the same as the Manicheans'? Who were these movements' prominent political philosopher-theologians? All these dualists thought that marriage and the body were evil; so it would seem that they would think the family, the fundamental cell of society, is evil, too, and thus all of civil society evil.