Campaigners say 13 indigenous people died in land conflicts last year.
Police said they had to use force when some protesters tried to reach a ramp leading into Congress.
Many of the indigenous protesters wore their traditional headdresses
Police said the clashes started when protesters tried to access a ramp leading into Congress
Some of the protesters were carrying bows and arrows
Police said no one was injured by the arrows fired
Riot police with shields tried to block the protesters from advancing
The protesters carried coffins meant to symbolise the number of indigenous people killed
Police fired tear gas at the protesters...
...and the protesters tried to kick the canisters back
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