Inside, the 318-year-old high-end knife company, called Burza, meticulously handcrafts gorgeous artisan knifes fashioned from Austrian steel and sharpened with Swiss diamonds.

BBC: Tiradentes: The culinary goldmine of Brazil

Some of the protesters are old-fashioned protectionists, such as the American steel workers who want curbs on imports from Brazil.

ECONOMIST: A cautious yes to pan-American trade