Democratic theorists advocate discussion within cultures and support social change. Seyla Benhabib is a democratic theorist who does not believe in the purity of cultures; she thinks of them as formed through dialogues with other cultures. Human cultures are, according to Benhabib, the constant change of imaginary boundaries. They influence each other and sometimes radicalize or conform as a reaction on other cultures. Benhabib argues that in democratic theory it is assumed that every single person should be able to determine their own life. She argues that pluralism, the existence of fundamentally different cultures, is compatible with cosmopolitanism, if three conditions are fulfilled. These conditions are:
- Egalitarian reciprocity: Members of minorities must have equal civil, political, economic and cultural rights as the majority.
- Voluntary self-ascription: When a person is born, it should not be expected that he or she will automatically be a member of a particular religion or culture. The state should not let groups define the lives of individuals. Members of a society have the right to express themselves and it is desirable that adult individuals be asked whether they choose to continue membership in their community.
- Freedom of exit and association: Every individual must be able to exit their group. When group members marry someone from another group, they have the right to be a member. Accommodations must be found for inter-group marriages and the resulting children.
It is contested whether cultural diversity and democratic equality can co-exist. Many cultures are not compatible with one or more of the three given conditions. For example, the first condition is violated within several cultures, such as the Kurds in Turkey or the Roma in Eastern Europe. Every nation state has groups that are not accepted by the majority. Some governments do nothing to stop discrimination against minorities. The second and third condition are also problematic. At this moment, pluralism does not seem to be compatible with cosmopolitanism.