Gusano
Spanish for "worm". It is used as a pejorative term for people calling for US intervention in Latin America, class traitors, and counter-revolutionaries. Popularized from Fidel's use for any reactionary, counter-revolutionary person.

Other meanings: Right-Wing, sell-out, conservative, neo-fascist, traitor.
Those Gusanos at the Centro Cultural held a fund raiser in conjunction with big-time War Profiteers.