And its counterpart, the North Chorotega Democratic Association, which operated fighting the Sandinistas on the northern border and preventing Nicaraguan immigrants from entering, and was responsible for creating training camps for Cuban counterrevolutionaries.

Peasant movements in the northern zone, Guanacaste or the San Carlos plain are also suspected of being repressed by the Costa Rican government with the support of groups related to the MCRL.

The Unión Patriótica was formed in 1961 in response to the alleged threat of left-wing insurgent actions against Costa Rican democratic institutions led by the well-known anti-communist Frank Marshall.

Several media outlets at the time denounced that the MCRL received large sums of money from companies and the governments of United States and Taiwan, with paramilitary training, however, close associates of the Movement took charge of diverting the attention and impede investigations.

On Sunday March 29, 2009, in a statement signed by Jose Alberto Pinto in La Nación, the reanudación de vínculos diplomáticos con el régimen socialista cubano, by the administración Arias Sánchez.