Human rights – Freedom of religion and belief – Interference with – Violent disruption of Muslim prayers outside Sofia Mosque by protestors from right-wing Bulgarian political party known for anti-Islamic views – Failure of Bulgarian authorities to take adequate steps to prevent or investigate disruption – Complaint by a worshipper at the mosque – Whether violation of right not to be subject to inhuman or degrading treatment, freedom of religion and private and family life either alone or in conjunction with right not to be discriminated against – European Convention on Human Rights, art 9.