CRC/C/15/Add.201 page 17 Convention, as well the United Nations Standard Minimum Rules for the Administration of Juvenile Justice (the Beijing Rules) and the United Nations Guidelines for the Prevention of Juvenile Delinquency (the Riyadh Guidelines); (b) Clarify the minimum age of criminal responsibility in the light of the legal provisions authorizing protective custody for children under the age of 12; (c) Develop child-oriented proceedings for adjudicating cases involving children in conflict with the law, including specialized training for judges as well as all other personnel; (d) Ensure that all acts of violence by the police toward minors are ended, including through the prosecution of police officers guilty of such acts; (e) Ensure that no children are detained illegally and that when detention is necessary as a measure of last resort, that persons under 18 are detained separately from adults; (f) Develop mechanisms and provide adequate resources. Children belonging to minority groups 67. The Committee welcomes the implementation of strategies aimed at promoting Roma children’s rights to health-care services and inclusion in education. The Committee also welcomes Roma NGO participation in promoting the rights of their children. However, it remains concerned at the negative attitudes and prejudices among the general public, media representations, incidents of police brutality, and discriminatory behaviour on the part of some persons working with and for children, including teachers and doctors. 68. In accordance with article 2 of the Convention, the Committee recommends that the State party: (a) Initiate campaigns, at all levels and in all regions, aimed at addressing the negative attitudes towards Roma in society at large, and in particular among authorities such as the police, and professionals providing health care, education and other social services; (b) Based on the evaluation of previous strategies, develop and implement a comprehensive proactive strategy for the improvement of access to primary health care, education and social welfare services, in cooperation with Roma NGO partners, and targeting the whole Roma child population; (c) Develop curriculum resources for all schools, including in relation to Roma history and culture, in order to promote understanding, tolerance and respect for Roma in Czech society.