Mr. DeLong, the Sandinista guerrilla war began in the 1960s, when Carlos Fonseca decided that Somoza could not be voted out of power. It took about 15 years to triumph. What should be kept in mind, however, is that the Sandinista movement was an outgrowth of an earlier protracted guerrilla struggle led by Sandino himself, who fought US marines to a standoff. Some of Sandino's soldiers actually enlisted with Fonseca's group and saw it is a continuation. With this in mind, you are talking about an armed struggle that spans 40 years at least.
Furthermore, your tax dollars have paid for assassination plots, chemical and biological warfare, military coups and economic blockade in this hemisphere. If I were you, I'd go a bit easy on the self-righteous condemnation of the Commies. I don't think Stalin ever did anything in his satellite states that begins to approximate the cruelty we have unleashed in El Salvador, Nicaragua, Haiti, the Dominican Republic, Panama, Chile, Guatemala, Honduras, Cuba, Grenada and Puerto Rico.