PBS appears to be using public resources (its publicly funded broadcasts and the publicly—owned airwaves) to engage in political lobhbying on its own behalf. The Media Research Center reports:

PBS viewers in and around Washington, DC, as well as across the country, are being repeatedly exposed to a saturation ad campaign urging them to contact their member of Congress to decry "devastating" cuts in the Corporation for Public Broadcasting's budget for next year. On Friday night alone, the MRC's Tim Graham monitored the local WETA station and counted no fewer than five airings of a 50—second ad darkly warning of a 45 percent cut in funding and how "they want to completely eliminate federal funding that supports educational and commercial—free children's programs."

Ed Lasky   6 21 05