A/HRC/10/38 page 6 legislation, with clear opportunities to mainstream children’s rights to non-discrimination into the anti-discrimination law (Equality Bill). However, it expressed concerns that, in practice, certain groups of children belonging to minority groups, such as the Roma, Irish Travellers and others, continue to experience discrimination and social stigmatization. The Committee therefore recommended that the State party ensure full protection against discrimination on any grounds by strengthening its awareness-raising and other preventive activities against discrimination and, if necessary, take affirmative action for the benefit of these vulnerable groups of children. It also expressed concern at the increased number of children in alternative care and, in particular, the high percentage of children of African descent and children from ethnic minorities. The Committee was similarly concerned that children of African descent and children of ethnic minorities sometimes face long waiting periods for adoption by a family of the same ethnic origin (CRC/C/GBR/CO/4). 17. Under the Optional Protocol to the Convention on the Rights of the Child on the Sale of Children, Child Prostitution and Child Pornography, in its concluding observations for the United Republic of Tanzania (CRC/C/OPSC/TZA/CO/1) and Uganda (CRC/C/OPSC/UGA/CO/1), the Committee expressed its concern about the lack of statistical data disaggregated by age, sex, minority group, socio-economic background and geographic location. The Committee, in its concluding observations on the report submitted by the United Kingdom of Great Britain and Northern Ireland under the Optional Protocol to the Convention on the Rights of the Child on the Involvement of Children in Armed Conflict (CRC/C/OPAC/GBR/CO/1), mentioned the State party’s active policy of recruitment of children into the armed forces, and recommended that the State ensure that this recruitment is not conducted in a manner which specifically targets ethnic minorities and children of low-income families. Committee against Torture 18. At its thirty-eighth session, held from 30 April to 18 May 2007, in its concluding observations to the report by Poland (CAT/C/POL/CO/4), the Committee against Torture noted with approval some positive legislative developments, such as the Law on National and Ethnic Minorities and on Regional Languages of January 2005, but also noted that it had received reports of intolerance and hatred towards minorities, while the State party was unable to supply statistics on racially motivated crimes, particularly violence against the Roma. The Committee recommended that the State party continue to be vigilant in ensuring that the relevant existing legal and administrative measures are strictly observed and that training curricula and administrative directives constantly convey to staff the message that incitation to hatred and violence will not be tolerated and will be sanctioned accordingly. 19. In its concluding observations to the report by Ukraine (CAT/C/UKR/CO/5), the Committee urged the State party to ensure prompt, impartial and effective investigations into incitement and acts of violence against persons belonging to ethnic and national minorities, including acts against Roma, anti-Semitic attacks and violence against persons of African and Asian origin and non-citizens; to prosecute and punish perpetrators with penalties appropriate to the nature of their acts; to publicly condemn hate crimes and related violent acts; to work to eradicate incitement and any role public officials or law enforcement personnel might have in