Fishermen in Chile protesting against a copper producer threw crabs in the street as a symbol of their spoiled crop.
They say state copper producer Codelco in Valparaiso has poisoned their source of income.
Outside Codelco offices, they burned a boat and made their voices heard.
"The shellfish were wiped out because everything is contaminated,’’ isherman, Jorge Carvajal said.
"We raise oysters but there is nothing now because they (Codelco) contaminated us with copper sulfate."
A Codelco representative said the company had been working to decrease contamination.