The President is merely the most important among a large number 
of public servants.  He should be supported or opposed exactly to 
the degree which is warranted by his good conduct or bad conduct, 
his efficiency or inefficiency in rendering loyal, able, and 
disinterested service to the nation as a whole.  Therefore it is 
absolutely necessary that there should be full liberty to tell 
the truth about his acts, and this means that it is exactly as 
necessary to blame him when he does wrong as to praise him when 
he does right.  Any other attitude in an American citizen is both 
base and servile.  To announce that there must be no criticism of 
the President, or that we are to stand by the President, right or 
wrong, is not only unpatriotic and servile, but is morally 
treasonable to the American public.  Nothing but the truth should 
be spoken about him or any one else.  But it is even more 
important to tell the truth, pleasant or unpleasant, about him 
than about any one else.
 — John Fitzgerald Kennedy
  Presidency