An investigation has been opened in the Brazilian state of Rio Grande do Sul following the death of a footwear workers' union member at a demonstration. Jair Antônio da Costa, 31, died on September 30 during a demonstration over unemployment in the footwear industry which involved over 2,000 workers from the Vale do Sinos shoe manufacturing cluster - the largest in the country – along with members of Congress and representatives of national workers' unions.