In modern times, the persecution of Rohingyas in Myanmar dates back to the 1970s. Since then, Rohingya people have regularly been made the target of persecution by the government and nationalist Buddhists. The tension between various religious groups in the country had often been exploited by the past military governments of Myanmar. According to Amnesty International, the Rohingya have suffered from human rights violations under past military dictatorships since 1978, and many have fled to neighbouring Bangladesh as a result. In 2005, the United Nations High Commissioner for Refugees had assisted with the repatriation of Rohingyas from Bangladesh, but allegations of human rights abuses in the refugee camps threatened this effort. In 2015, 140,000 Rohingyas remained in IDP camps after communal riots in 2012.