Obama's remarks served as the culmination of a week-long remembrance of a peaceful "March on Washington for Jobs and Freedom" that helped galvanize the civil rights movement of the 1960s.
The Grammy award-winning Mexican band will make its first appearance in Costa Rica since 2009. Local groups Cocofunka and 424 will open for Café Tacvba as part of a weekend-long music series produced by magazine WARP.
Since Venezuelan President Nicolás Maduro took over for the deceased Hugo Chávez in March, his government has alleged multiple assassination plots while providing few details on their nature.
