In August of 2009 a production team from PBS affiliate station, Colorado Public Television - CPT12 followed Colorado artist Mary Mackey as she returned to Berlin to repaint her mural "Tolerance" on the East Side Gallery of the Berlin Wall. In 1990 a few months after the Berlin Wall came down Mary moved to Berlin. As the only United States citizen selected to paint on this 1.3 kilometer preserved section of the Berlin Wall, Mary chose the topic of cultural tolerance as her subject. In the Spring... [see more] of 2009, the Berlin government invited Mary back to restore her mural as part of the 20th anniversary of that world changing event. The East Side Gallery, as the 118 murals by international artist became known, is the longest preserved section of the Cold War barrier.