"As President Obama was praising Brazil economic dynamism in the compound of Rio de Janeiro’s municipal theater, hundreds of protesters standing outside were expressing their strong opposition to his coming." - From "Brazil: Not Yet Ready for an Obama Love Affair" (The Morningside Post, March 30, 2011).
Read: "CIA Riots In Brazil" by Aangirfan.
Read this excerpt from, "Brazil balks at serving as junior partner to the US" by Alistair Burnett (June 13, 2013):
"To the irritation of Washington, Brazil has failed to extend support on issues such as the 2011 intervention in Libya, where Brasilia thought the Western powers were jumping the gun and abused the UN mandate to pursue regime change. For its part, Brazil has been irked by US failure to support its long-held ambition for a permanent seat on the UN Security Council.
Washington, traditionally the main foreign-arms supplier to Brazil, won't overlook Russian Prime Minister Dmitri Medvedev's February visit to Brazil to sign an agreement on selling air-defence equipment with President Rousseff.
But the highest-profile disagreement between the two has been over the Brazilian attempt, along with Turkey, to break the deadlock between Iran and the West over Tehran's nuclear programme. Former Brazilian president Luiz Inacio Lula da Silva went to Iran with Turkish Prime Minister Recep Tayyip Erdogan in May 2010 to sign a confidence-building deal with President Mahmoud Ahmadinejad to send Iranian-enriched uranium for reprocessing abroad, so it could not be diverted to any weapons programme. The US immediately rejected the deal. Then secretary of state Hillary Clinton accused Brazil and Turkey of making the world "a more dangerous place". Then Foreign Minister Celso Amorim insisted the US had been kept abreast of the negotiations; when asked at an international security conference later in the year why the US had rejected the deal, he said, "Some people just can't take 'yes' for an answer." He suggests the Americans were happy to go along with the initiative because they thought it would fail; when it succeeded, they turned on Brasilia. The agreement was essentially the same as a proposed deal that Iran and the UN Security Council's permanent five powers, plus Germany, almost signed eight months before in Geneva - another reason Brazil was taken aback by the US condemnation.
US diplomats and analysts take the view that Brazil is often unhelpful, by which they seem to mean it doesn't always support US policy. For their part, the Brazilians say the US doesn't want to accept that the world has changed, and Washington can't accept that it must deal with emerging economies on an equal footing.
The countries have also had their share of trade disputes over products from orange juice to cotton, whereas the US has tried to limit access to its markets for Brazilian produce. Since the 2008 crash, Brazil has accused the US of currency manipulation by using quantitative easing to devalue the dollar."