West Papuan protesters faced off with police in the Indonesian capital on Thursday in a demonstration calling for the remote region's independence.
Organizers had promised protests in other cities and said police had denied them permission to march in central Jakarta.
The dozens of demonstrators were blocked from marching onto a busy traffic circle in the capital by several hundred police who fired water cannons and dragged men from the crowd into waiting police vans.
“Don't hinder our right to voice our aspirations. Papuans are demanding the truth of our history,” a speaker standing atop a small truck shouted at the crowd. Members of the Papua Students Alliance chanted “Freedom Papua” and others sang independence songs.
Rights groups accuse the Indonesian military of serious human rights abuses in Papua and some Melanesian island states have also voiced concerns and called for Papuan independence.
Many West Papuans see Dec. 1 as the anniversary of what should have been their independence.
The Dutch colonizers of the Indonesian archipelago held onto West Papua when Indonesia became independent after World War II. It became part of Indonesia following a U.N.-supervised referendum in 1969 criticized as undemocratic.
A low-level insurgency has plagued the mineral-rich region, which is ethnically and culturally distinct from much of Indonesia, for years.
The Indonesian government, which for decades had a policy of sending Javanese and other Indonesians to settle in Papua, is now also trying to spur economic development to dampen the separatist movement.