Ernesto "Che" Guevara (June 14, 1928 – October 9, 1967), commonly known as Che Guevara, El Che, or simply Che, was an Argentine Marxist revolutionary, politician, author, physician, military theorist, and guerrilla leader. Since death, his stylized image has become a ubiquitous global symbol of Counterculture. As a young medical student, Guevara traveled throughout Latin America and was transformed by the endemic poverty he witnessed.

His experiences and observations during these trips led him to conclude that the region's ingrained economic inequalities were an intrinsic result of monopoly capitalism, neocolonialism, and imperialism, with the only remedy being world revolution. This belief prompted his involvement in Guatemala's social reforms under President Jacobo Arbenz Guzmán, whose eventual CIA-assisted overthrow solidified Guevara's radical ideology. Later, in Mexico, he met Fidel Castro and joined his 26th of July Movement.

In December 1956, he was among the revolutionaries who invaded Cuba under Castro's leadership with the intention of overthrowing U.S.-backed Cuban dictator Fulgencio Batista. Guevara soon rose to prominence among the insurgents, was promoted to Comandante, and played a pivotal role in the successful two year guerrilla campaign that deposed Batista. Following the Cuban revolution, Guevara reviewed the appeals of those convicted as war criminals during the revolutionary tribunals, ratifying sentences which in some cases involved execution by firing squads.

Later he served as minister of industry and president of the national bank, before traversing the globe as a diplomat to meet an array of world leaders on behalf of Cuban socialism. He then played a key role in bringing to Cuba the Soviet nuclear-armed ballistic missiles which precipitated the 1962 Cuban Missile Crisis. He was a prolific writer and diarist, composing a seminal manual on the theory and practice of guerrilla warfare, along with what later became a best-selling memoir about his motorcycle journey across South America.

Guevara left Cuba in 1965 to incite revolutions first in an unsuccessful attempt in Congo-Kinshasa and later in Bolivia, where he was captured by Bolivian forces assisted by the CIA and executed.

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