Question: What revolutionary movement that sought to define a Mexican identity did this Mexican painter whose work includes "Self-Portrait with Thorn Necklace and Hummingbird" participate in?

Context paragraphs:
José Zúñiga (artist): José Zúñiga (born 1937) is a Mexican painter whose work has been exhibited both in Mexico and abroad.  His work has been recognized by membership in the Salón de la Plástica Mexicana.

Paula Lazos: Paula Lazos (b.June 30, 1940 – d. January 27, 2010 ) was a Mexican painter whose work has been exhibited in both North and South America and recognized with membership in the Salón de la Plástica Mexicana.

Luz María Pizá Núñez: Luz María Pizá Núñez (born 1950) is a Mexican painter whose work has been recognized with membership in Mexico’s Salón de la Plástica Mexicana.  During her career, she has participated in numerous collective exhibitions, with three important individual exhibitions: "En la Tierra, en la Luna, en el Sol y en otras parte"s at the Escuela Nacional de Artes Plásticas (1976), "Labertintos del Espíritu" at the Salón de la Plástica Mexicana (1995) and Resonancia Interior, also at the Salón de la Plástica Mexicana.  In 2008, she was recognized by CONAPRED for her work with the project "Mujer, Discapacidad y Arte".

Mauricio García Vega: Mauricio García Vega is a Mexican painter whose work has been recognized by various awards and membership in the Salón de la Plástica Mexicana.  His work is mostly focus on urban landscapes often with dark themes and a chaotic feel.  He works alone and with his brother Antonio García Vega.  He currently lives and works in the Mexico City suburb of Ciudad Nezahualcóyotl.

Consuelo González Salazar: Consuelo González Salazar (born 1941) is a Mexican painter whose work has been recognized with membership in the country’s Salón de la Plástica Mexicana.

Julia López: Julia López is a self-taught Mexican painter whose works depict her childhood home in the Costa Chica region of Guerrero state.  She was born in a small farming village but left early for Acapulco and Mexico City to find a better life.  In the capital, she was hired as a model for artists at the Escuela Nacional de Pintura, Escultura y Grabado "La Esmeralda" and as such became part of the circle of notable artists of that time.  Their influenced encouraged her to draw and paint, with Carlos Orozco Romero discouraging her from formal instruction as to not destroy her style.  She began exhibiting in 1958 and since then has exhibited individually and collectively in Mexico, the United States and Europe.  Her work has been recognized with awards and membership in the Salón de la Plástica Mexicana.

Self-Portrait with Thorn Necklace and Hummingbird: Self-Portrait with Thorn Necklace and Hummingbird ("Autorretrato con Collar de Espinas") is a 1940 painting by Mexican painter Frida Kahlo.

Mexican Revolution in popular culture: There is a wide range of ways in which people have represented the Mexican Revolution in popular culture.  One of the most influential pioneers in this new philosophy of Mexican identity was Samuel Ramos who acknowledged Ortega for his influence of emphasizing the understanding of man in his concrete historical circumstances.  In his book, "Profile of man and Culture in Mexico", Ramos tried to develop a psychoanalysis of Mexican character.  He felt Mexican problems were the result of imitating European models without being able to overcome the legacy of revolutions, dictatorships and economic stagnation.  He felt that Mexican history was the expression of a collective inferiority complex stemming from the results of the Spanish Conquest, racial mixture and a disadvantageous geographical position.  He believed that in hiding their inferiority, Mexicans had resorted to unhealthy compensations including aggressive assertions of power that have isolated Mexicans from one another and prevented the attainment of a sense of community.  The solution Ramos proposed to this problem was a greater self-consciousness of a uniquely Mexican identity and the need for an education system with a humanistic orientation that would counter the materialistic civilization stemming from North American influence.  Even though Ramos was an intellectual literary leader, in the effort to develop a national philosophy more effectively geared to Mexican circumstances, he was vulnerable to the accusations that he was attached to a type of utopian thinking.  He was accused of not being able to bridge the gap between the values to which he was attached and the concrete political-economic circumstances of Mexican society.  Octavio Paz carried on Ramos’ psychoanalytic approach but developed it in a closer relationship to the concrete realities of Mexican historical developments and its contemporary economic-political problems.  Paz is also influential because he emphasizes context of Latin American and Third World political development.

Frida Kahlo: Frida Kahlo de Rivera (] ; born Magdalena Carmen Frida Kahlo y Calderón; July 6, 1907 – July 13, 1954) was a Mexican painter, who mostly painted self-portraits.  Inspired by Mexican popular culture, she employed a naïve folk art style to explore questions of identity, postcolonialism, gender, class, and race in Mexican society.  Her paintings often had strong autobiographical elements and mixed realism with fantasy.  In addition to belonging to the post-revolutionary "Mexicanidad" movement, which sought to define a Mexican identity, Kahlo has been described as a Surrealist or magical realist.  Her work has been celebrated internationally as emblematic of Mexican national and indigenous traditions, and by feminists for what is seen as its uncompromising depiction of the female experience and form.

Raúl Anguiano: José Raúl Anguiano Valadez (February 26, 1915 – January 13, 2006) was a notable Mexican painter of the 20th century, part of the “second generation” of Mexican muralists which continued the tradition of Diego Rivera, José Clemente Orozco and David Alfaro Siqueiros but experimented with it as well.  Anguiano was born during the height of the Mexican Revolution, which would inspire a majority of his mural painting.  He studied painting in his hometown of Guadalajara before moving to Mexico City to begin his career.  His first major exhibition was held at the Palacio de Bellas Artes, at age 20.  His works include over 100 individual and collective exhibitions with 50 murals, mostly in Mexico and the United States.  As he continued his artistry with aspects of the Mexican muralism movement, he also experimented with other styles such as Cubism, Surrealism and Expressionism, with themes such as clowns and prostitutes.  However, his most famous painting is “La espina” (The thorn) which depicts a Mayan woman digging a thorn out of her foot with a knife.  His later works concentrated on depicting Mexico in vivid colors and traditional imagery.

Supporting paragraphs: Self-Portrait with Thorn Necklace and Hummingbird Frida Kahlo
Answer: Mexicanidad