Otto Perez Molina resigned and was arrested on charges of corruption and accepting bribes; the elections that followed sent a confused message.
The Sept. 6 elections cannot be seen as legitimate because of the multiple scandals concerning violations of campaign laws and the constitution.
Voters will elect a new president to succeed Otto Perez Molina of the Patriotic Party, who is not allowed a second term.
Massive corruption scandals in two key allies of the U.S. in Central America are producing large demonstrations calling for the resignations of their presidents.
The train was one of several Mexican and Central American immigrants call "la Bestia" -- "the beast." It goes from Southern Mexico northward to Mexico's Northern border with the United States.
On the night of May 1, 2013, a criminal gang attacked a group of impoverished Central American migrants, who were riding on the top of a freight train passing through Cosoalacaque, in Veracruz, Mexico.
The Guatemalan Constitutional Court on May 20 threw out the guilty verdict of General Efrain Rios-Montt on technical grounds, plunging the whole country into a state of new insecurity.
A three-judge panel headed by Judge Jazmin Barrios sentenced him to 80 years in prison.
Former general and president Efrain Rios Montt will face charges for genocide and crimes against humanity.
The protesters were met by elements of the armed forces and the National Civil Police, who, evidently ordered to disperse them, opened fire, resulting in the deaths and injuries.