I dont know if this is the one....
Attack On The Ad-Man
This trumpeter of nothingness, employed
To keep our reason dull and null and void.
This man of wind and froth and flux will sell
The wares of any who reward him well.
Praising whatever he is paid to praise,
He hunts for ever-newer, smarter ways
To make the gilt seen gold; the shoddy, silk;
To cheat us legally; to bluff and bilk
By methods which no jury can prevent
Because the law's not broken, only bent.
This mind for hire, this mental prostitute
Can tell the half-lie hardest to refute;
Knows how to hide an inconvenient fact
And when to leave a doubtful claim unbacked;
Manipulates the truth but not too much,
And if his patter needs the Human Touch,
Skillfully artless, artlessly naive,
Wears his convenient heart upon his sleeve.
He uses words that once were strong and fine,
Primal as sun and moon and bread and wine,
True, honourable, honoured, clear and keen,
And leaves them shabby, worn, diminished, mean.
He takes ideas and trains them to engage
In the long little wars big combines wage...
He keeps his logic loose, his feelings flimsy;
Turns eloquence to cant and wit to whimsy;
Trims language till it fits his clients, pattern
And style's a glossy tart or limping slattern.
He studies our defences, finds the cracks
And where the wall is weak or worn, attacks.
lie finds the fear that's deep, the wound that's tender,
And mastered, outmanouevered, we surrender.
We who have tried to choose accept his choice
And tired succumb to his untiring voice.
The dripping tap makes even granite soften
We trust the brand-name we have heard so often
And join the queue of sheep that flock to buy;
We fools who know our folly, you and I.
Submitted by Stephen Fryer
A.S.J. Tessimond
http://www.poemhunter.com/p/m/poem.asp?poet=11910&poem=143200