Federal workers on strike march during a protest in Brasilia July 26, 2012. Brazil's civil servants haven't gotten President Dilma Rousseff's message. A slowing economy, dwindling tax revenue and falling demand for the country's commodity exports mean the government must tighten its belt, she argues. But customs workers, university professors and myriad other federal employees are staging strikes across the country, pushing for salary increases worth 92 billion reais ($45.3 billion). REUTERS/Cadu Gomes (BRAZIL - Tags: CIVIL UNREST POLITICS)