Braslia - Brazilian police fired tear gas on Tuesday to break up a protest by bow-and-arrow wielding indigenous chiefs who joined forces with anti-World Cup demonstrators to condemn the money spent on the tournament.
Wearing traditional clothing including feather headdresses and face paint, about 500 chiefs mainly from the Amazon basin joined another 500 protesters rallying for various social causes in Brasilia's government square and began marching toward the capital's World Cup stadium.
As mounted police moved to block the march, some of the indigenous demonstrators rushed their horses and one fired an arrow in their direction - hitting an officer in the leg, Globo TV reported.
Some of the indigenous could be seen throwing stones at some of the 700 police encircling the stadium. Protesters also blocked streets around the government plaza, where the congress, presidential palace and Supreme Court are located.
Earlier, the aboriginal leaders climbed onto the roof of the congress building in a protest they said was aimed at protecting their rights.
The protest, which brought together 100 ethnic groups from across Brazil, included Kayapo chief Raoni, an 84-year-old leader famous for fighting to protect the Amazon rainforest alongside pop music star Sting.
"Climbing onto the congress building was an act of bravery, it shows we're warriors who defend our rights," said Tamalui Kuikuru, an indigenous leader from the Xingu region in the western state of Mato Grosso.
They soon came down from the roof and rejoined the rest of the protesters along the main avenue where Brazil's government ministries are located.
"Who is the Cup for? Not us!" shouted demonstrators. "I don't want the Cup, I want money for health and education."
Anti-Cup protesters align
Full-blooded indigenous people in Brazil - who make up 0.3% of the country's population of 200 million - have staged a series of protests in recent months, accusing President Dilma Rousseff's government of stalling the demarcation of their ancestral lands and pursuing policies that favour large-scale farming.
In the run-up to the World Cup, which opens on 12 June, Brazil has also faced a wave of demonstrations by protesters angry over the more than $11bn budget for the tournament, which they say should have been spent on programmes to benefit the poor.
The indigenous leaders, who opened their protest with traditional prayers and drumming, aligned themselves to the broader anti-World Cup cause.
"Before organising the World Cup, Brazil should have thought more about health, education and housing," said Neguinho Truka, a leader of the Truka people in the northern state of Pernambuco, who was wearing a headdress of red and blue feathers.
Last year when Brazil hosted the Confederations Cup - a World Cup dress rehearsal - protests brought a million people into the streets and turned violent at times, to the embarrassment of tournament organisers.
Since then the protests have drawn smaller numbers but grown more radical. In recent weeks they have mainly been organised by established unions, leftist parties and activist groups such as the Landless Movement (MST) and the Homeless Workers' Movement (MTST), which was present at Tuesday's protest.
Brazil has also been hit by a series of strikes ahead of the World Cup and a presidential election in October. Police, teachers, bus drivers and bank security guards have all gone on strike in recent weeks.
Bus drivers in Rio de Janeiro have called a new 24-hour strike for Wednesday. Two weeks ago they trashed hundreds of buses and caused traffic chaos during a similar strike.
Strikes have also paralyzed the bus networks in World Cup host cities Bahia and Sao Paulo recently.