Examples include the coup to overthrow the democratically elected leader Mohammed Mossadegh in Iran, the ouster of democratically elected Jacob Arbenz in Guatemala, one coup per year (between 1957-1973) in Laos, the installation of the murderous “Papa Doc” Duvalier in Haiti, the assassination of Rafael Trujillo in the Dominican Republic, the overthrow of Jose Velasco in Ecuador, the assassination of the democratically elected Patrice Lumumba in the Congo (later Zaire), the overthrow of the democratically elected Juan Bosch in the Dominican Republic, the overthrow of the democratically elected government of Joao Goulart in Brazil, the overthrow of the democratically elected Sukarno government in Indonesia, a military coup in Greece designed to install the “reign of the colonels” (when the Greek ambassador complained about CIA plans for Cypress, Johnson told him: “F— your parliament and your constitution”), the overthrow of the popular Prince Sahounek in Cambodia, the overthrow of Juan Torres in Bolivia, the overthrow and assassination of Salvador Allende in Chile, the assassination of archbishop Oscar Romero in El Salvador, and dozens of other incidents rarely if ever taught in American school history lessons.
While there are many who think that Hugo Chavez was killed by the Central Intelligence Agency, there really is no concrete evidence to suggest that such a thing actually happened. It was well documented that he was sick with cancer for several years, and he simply succumbed to the illness.
Hugo Chavez was not killed by the CIA because the United States has no reason to want him dead. Hugo Chavez was sort of a dictator, but he wanted good things for his countrymen. He was fighting cancer for a long time and there has been no report of poisoning, gunshot wounds, etc.
Sure anything is possible, but there isn't any evidence showing he was assassinated. Even further, he died of cancer. The CIA would have had to expose him to radiation to accomplish that. That sounds pretty difficult, even more difficult than poisoning him. It seems highly unlikely, and there is no evidence.
If the CIA was going to kill somebody, they would do it in a far more efficient and quick way. Chavez suffered long and hard in his losing fight with cancer. Typically, if the CIA wanted a leader out of the way, they would want something quicker so they can help install the puppet they want in power.