Conceptual art is a highly controversial art form. Its supporters think it marks a significant expansion of the boundaries of art, which were previously growing increasingly commercialized. However, its detractors believe that it is trite, banal, and pretentious.
Pop Art

Although the movement began in the late 1950s, Pop Art in America was given its greatest impetus during the 1960s. By this time, American advertising had adopted many elements and inflections of modern art and functioned at a very sophisticated level. Consequently, American artists had to search deeper for dramatic styles that would distance art from the well-designed and clever commercial materials.As the British viewed American popular culture imagery from a somewhat removed perspective, their views were often instilled with romantic, sentimental and humorous overtones. By contrast, American artists being bombarded daily with the diversity of mass produced imagery, produced work that was generally more bold and aggressive.
Keith herring-conceptual art
When asked about the “commercialism” of his work, Mr. Haring said: “I could earn more money if I just painted a few things and jacked up the price. My shop is an extension of what I was doing in the subway stations, breaking down the barriers between high and low art. By the arrival of Pop Shop, his work began reflecting more socio-poliotical themes, such as anti-apartheid, aids awareness, and the crack cocaine epidemic. He even created several pop art pieces influenced by other products: Absolute Vodka, Lucky strike cigarettes, and Coca-cola. In 1987 he had his own exhibitions in Helsinki and Antwerp, among others. He also designed the cover for the benefit album A very special christmas, on which Madonna was included. In 1988 he joined a select group of artists whose work has appeared on the label of Chateau Mouton Rothschild wine.
“For Keith Haring, painting was a crucible - a site of transformation, of birth and death, a place where objects, lines, colors, and forms went through a creative catharsis and were then transmuted in order to experience a tempest of personal and social, erotic and mystical impulses.”
Pop art
Andy Warhol.
After a career as a commercial illustrator, Warhol became famous worldwide for his avant-garde Pop Art paintings and screenprintings. He was a diverse figure known for friendships with bohemian street people, distinguished intellectuals, Hollywood celebrities and wealthy aristocrats. He was also controversial figure because of the nature of his works, his near fatal shooting, and his sex life. For these reasons and others he is known as the Prince of Pop Art.

“http://www.lilithgallery.com/arthistory/popart/Andy-Warhol.html”
Pop art
Andy Warhol.
After a career as a commercial illustrator, Warhol became famous worldwide for his avant-garde Pop Art paintings and screenprintings. He was a diverse figure known for friendships with bohemian street people, distinguished intellectuals, Hollywood celebrities and wealthy aristocrats. He was also controversial figure because of the nature of his works, his near fatal shooting, and his sex life. For these reasons and others he is known as the Prince of Pop Art.


“http://www.lilithgallery.com/arthistory/popart/Andy-Warhol.html”