Hipódromo Argentino de Palermo hosts one of the country's biggest international horse-racing events of the year in Buenos Aires.

Hipódromo Argentino de Palermo hosts one of the country's biggest international horse-racing events of the year in Buenos Aires.

Hipódromo Argentino de Palermo hosts one of the country's biggest international horse-racing events of the year in Buenos Aires.

From the front of the University of Santiago advancing columns of protesters joined in the call of the Confederation of Workers (CUT) to commemorate the May 1.

From the front of the University of Santiago advancing columns of protesters joined in the call of the Confederation of Workers (CUT) to commemorate the May 1.

From the front of the University of Santiago advancing columns of protesters joined in the call of the Confederation of Workers (CUT) to commemorate the May 1.

A Labor Day rally was held in Rio de Janeiro against the privatization of the Maracana Stadium. Workers paraded outside the building waving flags and carrying placards and banners on a day that commemorated International Labor Day.

Over 18 million Venezuelans vote today to choose a successor to Hugo Chavez who died of cancer in February.

Over 18 million Venezuelans vote today to choose a successor to Hugo Chavez who died of cancer in February.

Over 18 million Venezuelans vote today to choose a successor to Hugo Chavez who died of cancer in February.

Thousands of supporters gather to greet Nicolas Maduro as he arrives in Caracas to deliver a campaign speech ahead of upcoming presidential elections and at the 11th anniversary of the overthrow, for three days, of Hugo Chavez in April 2002.

Thousands of supporters gather to greet Nicolas Maduro as he arrives in Caracas to deliver a campaign speech ahead of upcoming presidential elections and at the 11th anniversary of the overthrow, for three days, of Hugo Chavez in April 2002.

Thousands of supporters gather to greet Nicolas Maduro as he arrives in Caracas to deliver a campaign speech ahead of upcoming presidential elections and at the 11th anniversary of the overthrow, for three days, of Hugo Chavez in April 2002.

Thousands of followers of Henrique Capriles gathered in the streets of Caracas to listen to the opposition candidate speak ahead of the upcoming presidential elections when the country will choose a successor to the late Hugo Chavez.

Thousands of followers of Henrique Capriles gathered in the streets of Caracas to listen to the opposition candidate speak ahead of the upcoming presidential elections when the country will choose a successor to the late Hugo Chavez.

Thousands of followers of Henrique Capriles gathered in the streets of Caracas to listen to the opposition candidate speak ahead of the upcoming presidential elections when the country will choose a successor to the late Hugo Chavez.

Chavez followers attend as Nicolas Maduro is sworn in as president, coinciding with Independence Signature annual parade in Paseo Los Proceres.

Chavez followers attend as Nicolas Maduro is sworn in as president, coinciding with Independence Signature annual parade in Paseo Los Proceres.

Chavez followers attend as Nicolas Maduro is sworn in as president, coinciding with Independence Signature annual parade in Paseo Los Proceres.

Opposition supporters in the city of Valencia demanded the recounting of votes of the presidential election that led to the announcement of the winning candidate Nicolas Maduro.

Opposition supporters in the city of Valencia demanded the recounting of votes of the presidential election that led to the announcement of the winning candidate Nicolas Maduro.

Opposition supporters in the city of Valencia demanded the recounting of votes of the presidential election that led to the announcement of the winning candidate Nicolas Maduro.

Opposition presidential candidate Henrique Capriles Radonski denounced irregularities and called for a recount after the National Electoral Council proclaimed Hugo Chavez's handpicked successor as winner by just 300,000 votes.

Opposition presidential candidate Henrique Capriles Radonski denounced irregularities and called for a recount after the National Electoral Council proclaimed Hugo Chavez's handpicked successor as winner by just 300,000 votes.

Opposition presidential candidate Henrique Capriles Radonski denounced irregularities and called for a recount after the National Electoral Council proclaimed Hugo Chavez's handpicked successor as winner by just 300,000 votes.

Venezuelan presidential candidate Henrique Capriles Radonski votes in the Santo Tomas de Villanueva school in the Mercedes neighborhood in what is the first presidential election since the death of Hugo Chavez.

Venezuelan presidential candidate Henrique Capriles Radonski votes in the Santo Tomas de Villanueva school in the Mercedes neighborhood in what is the first presidential election since the death of Hugo Chavez.

Venezuelan presidential candidate Henrique Capriles Radonski votes in the Santo Tomas de Villanueva school in the Mercedes neighborhood in what is the first presidential election since the death of Hugo Chavez.

Despite the heat, thousands of Venezuelan´s congregated on Avenida Bolivar in downtown Caracas from early in the morning, to support and see Henrique Capriles Radonski closing campaign speech.

Despite the heat, thousands of Venezuelan´s congregated on Avenida Bolivar in downtown Caracas from early in the morning, to support and see Henrique Capriles Radonski closing campaign speech.

Despite the heat, thousands of Venezuelan´s congregated on Avenida Bolivar in downtown Caracas from early in the morning, to support and see Henrique Capriles Radonski closing campaign speech.

Henrique Capriles the leader of the opposition in Venezuela speaks during an assemble of citizens in the city of Valencia, as part of his presidential campaign.

Henrique Capriles the leader of the opposition in Venezuela speaks during an assemble of citizens in the city of Valencia, as part of his presidential campaign.

Henrique Capriles the leader of the opposition in Venezuela speaks during an assemble of citizens in the city of Valencia, as part of his presidential campaign.

Calvario, a slum right in the centre of the city, is considered the social bottom of Cali society.

Calvario, a slum right in the centre of the city, is considered the social bottom of Cali society.

Calvario, a slum right in the centre of the city, is considered the social bottom of Cali society.

Followers of deceased past President Hugo Chavez gather around the General Assembly to show support for the newly elected President of Venezuela, Nicolas Maduro.

Followers of deceased past President Hugo Chavez gather around the General Assembly to show support for the newly elected President of Venezuela, Nicolas Maduro.

Followers of deceased past President Hugo Chavez gather around the General Assembly to show support for the newly elected President of Venezuela, Nicolas Maduro.