By Anthony Boadle BRASILIA (Reuters) – Brazilian President Dilma Rousseff demanded on Monday that Canada explain a media report that said it spied on Brazil's Mines and Energy Ministry, and she called on the United States and its allies to stop spying over the Internet. A Brazilian television report said on Sunday that Canada's electronic eavesdropping agency targeted the ministry that manages the South American nation's vast mineral and oil resources. The report was based on documents leaked by former U.S. National Security Agency contractor Edward Snowden. …