 In 1966 Princen founded and headed Lembaga Pembela Hak-Hak Azasi Manusia (Indonesian Institute for the Defence of Human Rights).It was the first specifically HR organization to be created in the country, and which was to handle many high-profile human rights cases during the years of the Suharto dictatorship and provide a reliable alternate source of news to Western journalists in Jakarta.This was actually the very time when the new regime was engaged in the systematic mass killing of hundreds of thousands of supposed communist supporters – though the full extent of the horror was unknown at the time, either in Indonesia itself or abroad.