The WhatsApp channel called "Lula's Army" gathered almost 11 million people and was led by Congressman André Janones, whom Lula thanked during his victory speech.
The Venezuelan opposition leader spent more than 10 months in exile after escaping the country on a speedboat.
Brazil's left-wing President has been elected for a fourth term after narrowly beating right-wing Flávio Bolsonaro in a knife-edge vote.
Voters in Sunday's election are choosing between two very different candidates, as Americas correspondent Ione Wells reports from Rio de Janeiro.
The mother of two Australian surfers murdered in Mexico two years ago with their American friend said "accountability matters".
Millions of Brazilians took to the polls on Sunday for the first round of the country's presidential elections.
The Latin American country will vote for its next president, as Lula da Silva and Bolsonaro clash over sovereignty, security and ties with Washington.
The 13-month-old small canine is equipped with protective gear and a camera, and is being trained for search-and-rescue missions.
The BBC's Courtney Sargent explains how El Niño could have rapidly turned Hurricane Polo into one of the Pacific season's most powerful storms.
Thousands of turtles arrived at La Escobilla beach in Oaxaca within 48 hours, sanctuary officials said.
The burial site of the ancient pre-Incan Chimu culture was found largely intact.
Security camera footage shows a supermarket employee racing into action as a toddler runs towards moving traffic in Puebla, Mexico.
Young people across Latin America are taking part in the contests where participants compete to prove who has the most charisma.
The men, aged 53 and 32, lost contact with their fishing cooperative on 14 August, 75 miles off the coast of Mexico.
The Fuego volcano is located near Escuintla, Chimaltenango, and Sacatepéquez.
The record-breaking row of traditional sandwiches was assembled during Torta Fair, an annual food festival celebrating one of Mexico's most popular street foods.
Orla Guerin speaks to a gang leader about violence, drugs and infiltrating the police.
A "state of catastrophe" has been declared in Coquimbo and Huasco following the downpour.
Argentina fans at home and in the US celebrate their progression to the World Cup final.
Mexico's World Cup campaign ended with a 3-2 defeat to England in Mexico City.
