Madison's reference, in Federalist No. 10, to his concern about the dangers posed by "factions," or groups, who might attempt to dominate the political process. He warned such dangers could take place if political parties misused their freedom and created conflict by pitting their interests against one another. While factions will always exist, Madison argued, a republican (or representative) system could control them. Factions naturally try to advance their own interests, but often this leads to the trampling on rights of other groups.