The United States has destabilized or helped overthrow several "democratically elected" regimes in the name of economic or political freedom, and attracted much criticism for this.
There is some question as to whether a given election is "democratic" and whether the regime resulting from a given election is a "democracy". Proponents and opponents of certain regimes wrangle over whether the government was "democratically elected", particularly when another country proposes to invade or overthrow it.
Latin America and the Caribbean: *Chile - The U.S. assisted Augusto Pinochet in the 1973 Chile coup, claiming Salvador Allende was heading for a Cuba-style dictatorship. Pinochet stepped down after a plebiscite nearly 20 years later. *Haiti - The U.S. has intervened several times *Guatemala - In the 1950s, the U.S. helped overthrow Jacobo Arbenz
Middle East: * Iran (1953) - America and Britain helped overthrow the "democratically elected government" of Iran.