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http://en.wikipedia.org/wiki/False_flag

False flag operations are covert operations designed to deceive in such a way that the operations appear as though they are being carried out by other entities.

The replacement of Iran's Anglo-Persian Oil Company with five American oil companies and the 1953 Iranian coup d'état in 1953 was the consequence of the U.S. and British-orchestrated false flag operation, Operation Ajax, to depose the democratically elected leader of Iran, Mohammed Mosaddeq.

The planned, but never executed, 1962 Operation Northwoods plot by the U.S. Department of Defense for a war with Cuba involved scenarios such as fabricating the hijacking or shooting down passenger and military planes, sinking a U.S. ship in the vicinity of Cuba, burning crops, sinking a boat filled with Cuban refugees, attacks by alleged Cuban infiltrators inside the United States, and harassment of U.S. aircraft and shipping and the destruction of aerial drones by aircraft disguised as Cuban MiGs. These actions would be blamed on Cuba, and would be a pretext for an invasion of Cuba and the overthrow of Fidel Castro's communist government. It was authored by the Joint Chiefs of Staff, but then rejected by President John F. Kennedy.

On February 19, 2011, Indiana Deputy Prosecutor Carlos Lam sent a private email to Wisconsin Governor Scott Walker suggesting that he run a "'false flag' operation" to counter the protests against Walker's proposed restrictions on public employees' collective bargaining rights. "If you could employ an associate who pretends to be sympathetic to the unions' cause to physically attack you (or even use a firearm against you), you could discredit the unions," read the email. It went on to say that the effort "would assist in undercutting any support that the media may be creating in favor of the unions." The press had acquired a court order to access all of Walker's emails and Lam's email was exposed. At first, Lam vehemently denied it, but eventually admitted it and resigned.

During a 1981 interview, former CIA agent Michael Townley explained that Ignacio Novo Sampol, member of CORU, an anti-Castro organization, had agreed to commit the Cuban Nationalist Movement in the kidnapping, in Buenos Aires, of a president of a Dutch bank. After returning to the US, Novo Sampol sent Townley a stock of paper, used to print pamphlets in the name of "Grupo Rojo" (Red Group), an imaginary Argentine Marxist terrorist organization, which was to claim credit for the kidnapping of the Dutch banker. the pamphlets were distributed in Mendoza and Córdoba in relation with false flag bombings perpetrated by SIDE agents, which had as their aim to accredit the existence of the fake Grupo Rojo. However, the SIDE agents procrastinated too much, and the kidnapping ultimately was not carried out.