NEW YORK - Liberal political advocacy group MoveOn org has charged CBS Television and parent Viacom with political favoritism after the network agreed to run a White House anti-drug ad during the Super Bowl but has rejected the group's 30-second spot.

"It seems to us that CBS simply defers to those it fears or from whom it wants favors--in this case, the Bush White House," said Eli Pariser, MoveOn.org's campaign director, in a statement. "This is the same CBS that recently backed down when the Republican National Committee made a stink about its miniseries on former President Reagan and his family."

[continues 300 words]