Copenhagen 1990 (32.3) - to profess and practise their religion, including the acquisition, possession and use of religious materials, and to conduct religious educational activities in their mother tongue; (32.4) - to establish and maintain unimpeded contacts among themselves within their country as well as contacts across frontiers with citizens of other States with whom they share a common ethnic or national origin, cultural heritage or religious beliefs; (32.5) - to disseminate, have access to and exchange information in their mother tongue; (32.6) - to establish and maintain organizations or associations within their country and to participate in international non-governmental organizations. Persons belonging to national minorities can exercise and enjoy their rights individually as well as in community with other members of their group. No disadvantage may arise for a person belonging to a national minority on account of the exercise or non-exercise of any such rights. (33) The participating States will protect the ethnic, cultural, linguistic and religious identity of national minorities on their territory and create conditions for the promotion of that identity. They will take the necessary measures to that effect after due consultations, including contacts with organizations or associations of such minorities, in accordance with the decision-making procedures of each State. Any such measures will be in conformity with the principles of equality and non-discrimination with respect to the other citizens of the participating State concerned. (34) The participating States will endeavour to ensure that persons belonging to national minorities, notwithstanding the need to learn the official language or languages of the State concerned, have adequate opportunities for instruction of their mother tongue or in their mother tongue, as well as, wherever possible and necessary, for its use before public authorities, in conformity with applicable national legislation. In the context of the teaching of history and culture in educational establishments, they will also take account of the history and culture of national minorities. (35) The participating States will respect the right of persons belonging to national minorities to effective participation in public affairs, including participation in the affairs relating to the protection and promotion of the identity of such minorities. The participating States note the efforts undertaken to protect and create conditions for the promotion of the ethnic, cultural, linguistic and religious identity of certain national minorities by establishing, as one of the possible means to achieve these aims, appropriate local or autonomous administrations corresponding to the specific historical and territorial circumstances of such minorities and in accordance with the policies of the State concerned. 80 OSCE Human Dimension Commitments