Dadaism, an avant-garde movement that emerged during World War I, was known for its anti-war and anti-establishment stance. Dadaists used satire, collage, and other unconventional techniques to challenge traditional notions of art and to protest against the political and social turmoil of the time.

Propaganda art is a type of art that is specifically created to promote a particular political ideology or cause. It is often used by governments or political parties to influence public opinion and shape public policy.

Guernica, painted by Pablo Picasso in 1937, is a large and powerful anti-war painting that depicts the suffering and devastation caused by the bombing of the Basque town of Guernica during the Spanish Civil War. The painting is a powerful indictment of war and violence, and it has become one of the most iconic works of art of the 20th century.

Soviet Socialist Realism was an art style that was used to promote the ideals of the Communist Party, celebrate the achievements of the Soviet people, and glorify the leaders of the Soviet Union. It was a highly controlled and regulated style that was used to create a positive image of the Soviet Union and to promote its political and social agenda.

Shepard Fairey is an American contemporary street artist, graphic designer, and activist. He is best known for his "Hope" poster, which became a symbol of Barack Obama's presidential campaign in 2008. The poster features a stylized portrait of Obama with the word "Hope" superimposed over it.

Advertising art is a type of art that is specifically created to promote a particular commercial product or service. It is often used in advertising campaigns to attract attention and to persuade consumers to purchase the product or service.

Rosie the Riveter is a famous painting by Norman Rockwell that was created during World War II. The painting depicts a strong and confident woman working in a factory, and it became a symbol of the American women who worked in factories and other jobs to support the war effort.

The "War Posters" produced by the United States government during World War I were designed to promote patriotism and support for the war effort, to recruit soldiers and raise funds for the war, and to demonize the enemy and create a sense of urgency.

The Liberation of the Peon is a famous painting by Diego Rivera that was commissioned by the Mexican government to promote the Mexican Revolution. The painting depicts a group of peasants and workers rising up against their oppressors, and it became a symbol of the struggle for social justice and equality in Mexico.

Activist art is a type of art that is specifically created to promote a particular social or political cause. It is often used by activists and social justice organizations to raise awareness of an issue and to call for change.

The Walled Off Hotel is a famous painting by Banksy that is a powerful commentary on the Israeli-Palestinian conflict. The painting depicts a hotel that is located in Bethlehem, Palestine, and is surrounded by the Israeli West Bank barrier. The painting is a reminder of the ongoing conflict between Israel and Palestine, and it has become a symbol of the struggle for peace in the region.

The "Propaganda Kunst" produced by the Nazi regime in Germany during World War II was designed to promote the Nazi ideology and glorify the Nazi leaders, to demonize the enemy and create a sense of urgency, and to recruit soldiers and raise funds for the war effort.

Composition VII is a famous painting by Wassily Kandinsky that is considered a masterpiece of abstract art and a symbol of the Russian Revolution. The painting is a complex and dynamic composition that is filled with vibrant colors and geometric shapes. It is said to represent the chaos and upheaval of the Russian Revolution, and it has become one of the most iconic works of art of the 20th century.

Religious art is a type of art that is specifically created to promote a particular religious or spiritual belief. It is often used in religious ceremonies and rituals, and it can be found in a variety of forms, including paintings, sculptures, mosaics, and stained glass windows.

The Mona Lisa is a famous painting by Leonardo da Vinci that is considered a masterpiece of the Renaissance and a symbol of the power of art to transcend time and culture. The painting depicts a young woman with a mysterious smile, and it has been the subject of much debate and speculation over the centuries. The Mona Lisa is one of the most famous and iconic works of art in the world, and it continues to fascinate and inspire people to this day.