Cuban Democracy in the Speeches of Fidel Castro, 1959–1976 by Juan Carlos Medel

“…At the dawn of the Cuban revolution Castro was careful enough to avoid Marxist concepts in his speeches, but after the Bay of Pigs invasion in 1961 Castro embraced socialism as the ideology of the revolution. …”
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US foreign policy, 1959-80: impact on refugee flow from Cuba. by Scanlan, J, Loescher, G

“…During the 1959-62 migration wave, particularly prior to the failure of the Bay of Pigs invasion, Cubans were welcomed as temporary exiles, likely to topple Castro and return home. …”