Moscow 1991 ments in the cultural field, as laid down in the Document of the Cracow Symposium on the Cultural Heritage, and express the view that cultural issues, including cultural freedom, creativity and co-operation, should be further considered in the CSCE. (36) The participating States recall their commitment in the Vienna Concluding Document to keep the question of capital punishment under consideration and reaffirm their undertakings in the Document of the Copenhagen Meeting to exchange information on the question of the abolition of the death penalty and to make available to the public information regarding the use of the death penalty. (36.1) They note (i) that the Second Optional Protocol to the International Covenant on Civil and Political Rights aiming at the abolition of the death penalty entered into force on 11 July 1991; (ii) that a number of participating States have recently taken steps towards the abolition of capital punishment; (iii) the activities of several non-governmental organizations concerning the question of the death penalty. (37) The participating States confirm the provisions and commitments of all CSCE documents, in particular the Document of the Copenhagen Meeting of the Conference on the Human Dimension of the CSCE, concerning questions relating to national minorities and the rights of persons belonging to them, and the Report of the Geneva CSCE Meeting of Experts on National Minorities, and call for their full and early implementation. They believe that, in particular, the use of the new and expanded CSCE mechanisms and procedures will contribute to further protection and promotion of the rights of persons belonging to national minorities. (38) The participating States recognize the need to ensure that the rights of migrant workers and their families lawfully residing in the participating States are respected and underline their right to express freely their ethnic, cultural, religious and linguistic characteristics. The exercise of such rights may be subject to such restrictions as are prescribed by law and are consistent with international standards. (38.1) They condemn all acts of discrimination on the ground of race, colour and ethnic origin, intolerance and xenophobia against migrant workers. They will, in conformity with domestic law and international obligations, take effective measures to promote tolerance, understanding, equality of opportunity and respect for the fundamental human rights of migrant workers and adopt, if they have not already done so, measures that would prohibit acts that constitute incitement to violence based on national, racial, ethnic or religious discrimination, hostility or hatred. (38.2) They will adopt appropriate measures that would enable migrant workers to participate in the life of the society of the participating States. OSCE Human Dimension Commitments 119