The Zócalo (Spanish pronunciation: [ˈsokalo], plinth) is the main plaza or square in the heart of the historic center of Mexico City. The plaza used to be known simply as the "Main Square" or "Arms Square," and today its formal name is Plaza de la Constitución (Constitution Square). This name does not come from any of the Mexican constitutions that have governed the country but rather from the Cádiz Constitution which was signed in Spain in 1812. However, it is almost always called the Zócalo today. Plans were made to erect a column as a monument to Independence, but only the base, or zócalo, was ever built. The plinth was destroyed long ago but the name has lived on. Many other Mexican towns and cities, such as Oaxaca and Guadalajara, have adopted the word zócalo to refer to their main plazas, but not all.

It has been a gathering place for Mexicans since Aztec times, having been the site of Mexica ceremonies, the swearing in of viceroys, royal proclamations, military parades, Independence ceremonies and modern religious events such as the festivals of Holy Week and Corpus Christi. It has received foreign heads of state and is the main venue for both national celebration and national protest.

Manu Chao (born José-Manuel Thomas Arthur Chao on June 21, 1961), is a French singer of Spanish roots (Basque and Galician). He sings in French, Spanish, English, Italian, Galician, Arabic and Portuguese and occasionally in other languages. Chao began his musical career in Paris, busking and playing with groups such as Hot Pants and Los Carayos, which combined a variety of languages and musical styles. With friends and his brother Antoine Chao, he founded the band Mano Negra in 1987, achieving considerable success, particularly in Europe. He became a solo artist after its breakup in 1995, and since then tours regularly with his live band, Radio Bemba.

Chao was born to Spanish parents. His mother, Felisa Ortega, is from Bilbao, Basque country and his father, writer and journalist Ramón Chao, is from Vilalba, Galicia. They emigrated to Paris to avoid Francisco Franco's dictatorship—Manu's grandfather had been sentenced to death. Shortly after Manu's birth, the Chao family moved to the outskirts of Paris, and Manu spent most of his childhood in Boulogne-Billancourt and Sèvres. As he grew up he was surrounded by many artists and intellectuals, most of whom were acquaintances of his father. Chao cites much of his childhood experience as inspiration for some songs.

Elena Poniatowska (born 1932) is one of Mexico’s best known journalists and authors, specializing in works on social and political issues focused on those considered to be disenfranchised especially women and the poor. She was born in Paris to upper class parents, including her mother whose family fled Mexico during the Mexican Revolution. She left France for Mexico when she was ten to escape the Second World War. When she was eighteen and without a university education, she began writing for the newspaper Excélsior, doing interviews and society columns. Despite the lack of opportunity for women from the 1950s to the 1970s, she evolved to writing about social and political issues in newspapers, books in both fiction and nonfiction form. Her best known work is La noche de Tlatelolco (Massacre in Mexico) about the repression of the 1968 student protests in Mexico City. Despite the lack of international recognition, she is considered to be “Mexico’s grande dame of letters” and is still an active writer.

Justin Drew Bieber ( /ˈbiːbər/ BEE-bər, born March 1, 1994) is a Canadian Pop/R&B singer-songwriter, musician, and actor. Bieber was discovered in 2008 by Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with Usher in Atlanta, Georgia, and Bieber was soon signed to Raymond Braun Media Group (RBMG), a joint venture between Braun and Usher, and then to a recording contract with Island Records offered by L.A. Reid. Bieber's debut single, "One Time", was released in 2009 and peaked in the top twenty in Canada and charted in the top thirty in several international markets. His debut album, the seven-track EP My World, followed in November 2009, and was soon certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100.

Enrique Peña Nieto (born July 20, 1966) is a Mexican politician. A member of the Institutional Revolutionary Party (Partido Revolucionario Institucional, PRI), he served as governor of the State of Mexico from 2005 to 2011. On September 19, 2011, he announced his candidacy in the 2012 Mexican presidential election to succeed Felipe Calderón, and formally registered his candidacy on November 27, 2011.

Peña Nieto was born at Atlacomulco in Mexico State. His father, Gilberto Enrique Peña del Mazo, worked for the Comisión Federal de Electricidad and his mother, María del Perpetuo Socorro Ofelia Nieto Sánchez, was a school teacher. Peña is related to several politicians: Severiano Peña, mayor of Acambay in 1914, 1916, 1921 and 1923; Alfredo del Mazo González, former governor; and Arturo Montiel Rojas, also former governor. In 1993, Peña married his first wife Mónica Pretelini with whom he had three children: Paulina, Alejandro and Nicole. Pretelini died on January 11, 2007 due to an epileptic episode. In 2008, Peña Nieto announced publicly in a TV show his romantic relationship with Televisa soap opera actress Angélica Rivera. Rivera and Peña Nieto married on November 27, 2010 in Toluca.