Carrie Kahn

William Ordonez and his wife, Carolia, thought that starting a new business in San Pedro Sula, Honduras, was a great idea.

But just two weeks after they started selling chips, candy and soda, gang members showed up and ordered them to pay about $25 a week.

"We tried explaining to them that we just opened, we aren't making that much, we can't pay you," Ordonez says.

In a Guatemalan courtroom Tuesday, prosecutors will present their case against a former military dictator who ruled during one of the bloodiest periods in the Central American nation's 36-year civil war.

Efrain Rios Montt is accused of genocide in the murder of tens of thousands of Guatemala's Indians. Human rights advocates and the families of victims have struggled for years to bring him before the court, and they say it is the first trial in Latin America of a former president in the country where he ruled.