Question: What did the painting represent to Rivera?
About the article "Man at the Crossroads", section "Work".

Candidate passages:
Orozco Rivera was a student and apprentice to David Alfaro Siqueiros, a later proponent of the Mexican muralism movement, faithfully adhering to the aesthetics and ideology of social realism.
His artistic work; oils, sculptures and murals show strong influence from Siqueiros, with the most common themes being the struggles of common and marginalized peoples, done without portraying anyone in particular, using composite faces.
He considered painting to be a social contract and preferred painting murals over easel works “which are sold in galleries like merchandise.” He did not believe in art for its own sake, rather that it was fundamentally social and communicative.
He stated he painted to express what he had inside, not for pleasure. 
Rivera competed in and won Miss Mundo de Puerto Rico 2005 giving her the right to Represent Puerto Rico at Miss World. 
In 2012, Garcia announced he would seek a rematch against Rivera in what was now the 26th district.
It is more divided between Republicans and Democrats than its predecessor, the 25th district.
It had been pushed well to the east and south, losing its share of Collier County and picking up all of Monroe County, including the Keys.
The race was widely expected to be much closer than in previous cycles, in part due to the new demographics, and due to numerous scandals surrounding Rivera.
In addition to several state probes, Rivera was the target of a federal investigation into allegations he tried to sabotage the Democratic primary in the 26th by secretly funding an unknown candidate, Justin Sternad, in hopes of avoiding a rematch against Garcia.
Several vendors Sternad employed in his campaign told "The Miami Herald" that Rivera had funded Sternad's campaign.
Sternad himself subsequently told the FBI that Rivera had funded his campaign.
Sternad's campaign manager, Ana Alliegro, was a close friend of Rivera's, and according to Sternad served as the go-between.
Garcia won the rematch, defeating Rivera 54%–43%.
He is the first Cuban-American Democrat to represent South Florida in Congress, as well as the first non-black Democrat to represent a significant portion of Miami since 1993. 
As a disciple of Rivera and Kahlo, Lazo is part of the Mexican School of Painting or Mexican muralism movement.
Working with the muralists, she learned that artists should not be isolated from society, but rather “be in the streets” and observe what is happening.
One other influence is that of her favorite writer, Miguel Ángel Asturias, who she met as a child, and again in Mexico much later.
Asturias has written about her work as wellShe prefers fresco painting, but her canvas works are noted for their interpretative quality, such as El espejo de mi studio from 2001, which features herself in a mirror which is surrounded by children.
Lazo feels that art and artists today are too commercialized and no longer committed to social causes.
Although mural painting does not enjoy the popularity today as it once did, Lazo still feels that Mexican muralism is important and relevant.
She points out that major protagonists with the movement, such as Frida Kahlo and Diego Rivera, still have international name recognition and exhibits of their work.
Lazo believes that it will make a comeback because of Mexico’s long history with this art form and its association for reflection social and political issues.  
Rivera was called up to represent his country for the 2002 FIFA World Cup qualifiers.
He is now an Ecuadorian citizen after living in the country for 3 consecutive years.