38. Government agencies should take special responsibility and provide necessary services for homeless or street children; information about local facilities, accommodation, employment and other forms and sources of help should be made readily available to young persons. 39. A wide range of recreational facilities and services of particular interest to young persons should be established and made easily accessible to them. D. Mass media 40. The mass media should be encouraged to ensure that young persons have access to information and material from a diversity of national and international sources. 41. The mass media should be encouraged to portray the positive contribution of young persons to society. 42. The mass media should be encouraged to disseminate information on the existence of services, facilities and opportunities for young persons in society. 43. The mass media generally, and the television and film media in particular, should be encouraged to minimize the level of pornography, drugs and violence portrayed and to display violence and exploitation disfavourably, as well as to avoid demeaning and degrading presentations, especially of children, women and interpersonal relations, and to promote egalitarian principles and roles. 44. The mass media should be aware of its extensive social role and responsibility, as well as its influence, in communications relating to youthful drug and alcohol abuse. It should use its power for drug abuse prevention by relaying consistent messages through a balanced approach. Effective drug awareness campaigns at all levels should be promoted. V. SOCIAL POLICY 45. Government agencies should give high priority to plans and programmes for young persons and should provide sufficient funds and other resources for the effective delivery of services, facilities and staff for adequate medical and mental health care, nutrition, housing and other relevant services, including drug and alcohol abuse prevention and treatment, ensuring that such resources reach and actually benefit young persons. 46. The institutionalization of young persons should be a measure of last resort and for the minimum necessary period, and the best interests of the young person should be of paramount importance. Criteria authorizing formal intervention of this type should be strictly defined and limited to the following situations: (a) where the child or young person has suffered harm that has been inflicted by the parents or guardians; (b) where the child or young person has been sexually, physically or emotionally abused by the parents or guardians; (c) where the child or young person has been neglected, abandoned or exploited by the parents or guardians; (d) where the child or young person is threatened by physical or moral danger due to the behaviour of the parents or guardians; and (e) where a serious physical or psychological danger to the child or young person has manifested itself in his or her own behaviour and neither the parents, the guardians, the juvenile himself or