[Takes off Commie hat for Cynical Hat]
“No one ever went broke underestimating the intelligence of the American public.”
--H.L Mencken
Which apparently is the more famous paraphrase of:
“No one in this world, so far as I know — and I have searched the records for years, and employed agents to help me — has ever lost money by underestimating the intelligence of the great masses of the plain people. Nor has anyone ever lost public office thereby.”