FARC leaders stressed that "a group of foolish people" cannot derail the FARC from its commitment to peace.
A final peace deal was signed between the Colombian government and the FARC in November.
The FARC was formed in 1964 as the military wing of Colombia's Communist Party. The half-century war between the FARC and the Colombian government claimed the lives of a quarter of a million people. The two sides began peace talks in November 2012.
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