A/HRC/36/45/Add.2 (r) Ensure the rights of all individuals and groups to freely protest over issues relating to their rights to water and sanitation without fear of harassment or arrest, and guarantee their safety and protection in law and in practice; (s) Ratify the Optional Protocol to the International Covenant on Economic, Social and Cultural Rights, allowing complaints to be submitted to the Committee on Economic, Social and Cultural Rights by or on behalf of individuals or groups of individuals under the jurisdiction of Mexico who claim to be victims of a violation of the human rights to water and sanitation. 69. The Special Rapporteur recommends that the Governments of Mexico and neighbouring countries enhance existing cooperative relationships in the area of water and sanitation, including by sharing good practice and technical assistance. 19