After helping to found an artists group in support of civil rights, Bearden expressed representational and more overtly socially conscious aspects in his work. He used clippings from magazines, which in and of itself was a new medium, as glossy magazines were fairly new. He used these glossy scraps to incorporate modernity in his works, trying to show how African-American rights were moving forward, and so was his socially conscious art. In 1964, he held an exhibition he called Projections, where he introduced his new collage style. These works were very well received and are generally considered to be his best work. Bearden had numerous museum shows of his work since then, including a 1971 show at the Museum of Modern Art entitled Prevalence of Ritual, an exhibition of his prints, entitled A Graphic Odyssey showing the work of the last fifteen years of his life; and the 2005 National Gallery of Art retrospective entitled The Art of Romare Bearden. In 2011, Michael Rosenfeld Gallery exhibited its second show of the artist's work, Romare Bearden (1911–1988): Collage, A Centennial Celebration, an intimate grouping of 21 collages produced between 1964 and 1983. One of his most famous series, Prevalence of Ritual, concentrates mostly on southern African-American life. He used these collages to show his rejection of the Harmon Foundation's (a New York City arts organization) emphasis on the idea that African Americans must reproduce their culture in their art. Bearden found this approach to be a burden on African artists, because he saw the idea as creating an emphasis on reproduction of something that already exists in the world. He used this new series to speak out against this limitation on Black artists, and to emphasize modern art. In this series, one of the pieces is entitled Baptism. Bearden was influenced by Francisco de Zurbarán, and based Baptism on Zurbarán's painting The Virgin Protectress of the Carthusians. Bearden wanted to show how the water that is about to be poured on the subject being baptized is always moving, giving the whole collage a feel and sense of temporal flux. He wanted to express how African Americans' rights were always changing, and society itself was in a temporal flux at the time. Bearden wanted to show that nothing is fixed, and expressed this idea throughout the image: not only is the subject about to have water poured from the top, but the