Out of the two main Korean organisations in Japan, Chongryon has been the more militant in advocating retention of Korean ethnic identity. It is generally opposed to Korean-Japanese integration into Japanese society; for example, it discourages its members from naturalising as Japanese citizens or marrying Japanese (which it calls an "international marriage"). It even rejects zainichi Koreans' right to vote or participate in Japanese regional elections, which it sees as an unacceptable attempt at assimilation into Japanese society. This is in contrast to Mindan, which is campaigning for wider zainichi Korean participation in Japanese politics.