notification prior to making contact with individuals in NGO's area of interest), and the precondition that all foreign funds be passed through the Bank of Uganda, among other things, are severely limiting the output of the NGO sector. Furthermore, the sector's freedom of speech has been continually infringed upon through the use of intimidation, and the recent Public Order Management Bill (severely limiting freedom of assembly) will only add to the government's stockpile of ammunition. Human rights There are many areas which continue to attract concern when it comes to human rights in Uganda. Conflict in the northern parts of the country continues to generate reports of abuses by both the rebel Lord's Resistance Army (LRA), led by Joseph Kony, and the Ugandan Army. A UN official accused the LRA in February 2009 of "appalling brutality" in the Democratic Republic of Congo. The number of internally displaced persons is estimated at 1.4 million. Torture continues to be a widespread practice amongst security organisations. Attacks on political freedom in the country, including the arrest and beating of opposition members of parliament, have led to international criticism, culminating in May 2005 in a decision by the British government to withhold part of its aid to the country. The arrest of the main opposition leader Kizza Besigye and the siege of the High Court during a hearing of Besigye's case by heavily armed security forces – before the February 2006 elections – led to condemnation. Child labour is common in Uganda. Many child workers are active in agriculture. Children who work on tobacco farms in Uganda are exposed to health hazards. Child domestic servants in Uganda risk sexual abuse. Trafficking of children occurs. Slavery and forced labour are prohibited by the Ugandan constitution. The US Committee for Refugees and Immigrants reported several violations of refugee rights in 2007, including forcible deportations by the Ugandan government and violence directed against refugees. Torture and extrajudicial killings have been a pervasive problem in Uganda in recent years. For instance, according to a 2012 US State Department report, "the African Center for Treatment and Rehabilitation for Torture Victims registered 170 allegations of torture against police, 214 against the UPDF, 1 against military police, 23 against the Special Investigations Unit, 361 against unspecified security personnel, and 24 against prison officials" between January and September 2012. In September 2009, Museveni refused Kabaka Muwenda Mutebi, the Baganda king, permission to