United Nations Model Strategies and Practical Measures on the Elimination of Violence against Children in the Field of Crime Prevention and Criminal Justice A/RES/69/194 (b) To prevent the sale of children, trafficking in children, child prostitution and child pornography; (c) To prevent the production, possession and dissemination of images and all other materials that depict, glorify or incite violence against children, including when perpetrated by children, particularly through information technologies, such as the Internet, in particular social networking environments. 16. Broad public education and awareness campaigns are required. Member States, in cooperation with educational institutions, non-governmental organizations, relevant professional associations and the media, are urged, as appropriate and while taking into consideration relevant international human rights instruments: (a) To implement and support effective public awareness and public education initiatives that prevent violence against children by promoting respect for their rights and by educating their families and communities about the harmful impact of violence; (b) To raise awareness of how to prevent and respond to violence against children among persons who have regular contact with children in the justice, child protection, social welfare, health and education sectors and in areas relating to sport, culture and leisure activities; (c) To encourage and support inter-agency cooperation in implementing violence prevention activities and programmes, planning and delivering public information campaigns, training professionals and volunteers, gathering data on the incidence of violence against children, monitoring and evaluating the effectiveness of programmes and strategies and exchanging information on good practices and lessons learned; (d) To encourage the private sector, in particular the information and communications technology sector, the tourism and travel industry and the banking and finance sectors, and civil society to participate in the development and implementation of policies to prevent the exploitation and abuse of children; (e) To encourage the media to contribute to community efforts to prevent and respond to violence against children and to promote changes in social norms that tolerate such violence, and to encourage the establishment of media-led ethical guidelines that will allow child-friendly coverage and reportage on cases involving child victims of abuse, exploitation, neglect and discrimination, taking into consideration the right of children to privacy; (f) To involve children, their families, communities, local leaders, religious leaders and criminal justice and other relevant professionals in discussing the impact and detrimental effects of violence against children and ways to prevent violence and eliminate harmful practices; (g) To challenge attitudes that condone or normalize violence against children, including the tolerance and acceptance of corporal punishment and harmful practices, and the acceptance of violence. 17. In order to address the vulnerability and the specific risks of violence faced by unaccompanied children, migrant children and children who are refugees or asylum seekers, Member States are urged, as appropriate and without prejudice to their obligations under international law: (a) To ensure that these children have access to independent assistance, advocacy and advice, that they are always placed in appropriate accommodation and 11/29