[Bloody Sam Roberts]

Dr. Joseph Goebbels, the notorious Nazi propaganda minister, once said if you repeat a lie often enough, the people will come to believe it.

I believe that is incorrect.
Though Goebbels is often given credit for that line, it was Lenin who should be credited. The exact quote is;

"A lie told often enough becomes truth" - - Vladimir Lenin.

[Welcome2thejungle]

You are exactly correct. I would like to add, however, that Dr. Goebbels shared Lenin’s cynicism toward the value of propoganda. Goebbels wrote:

“That propaganda is good leads to success, and that is bad which fails to achieve the desired result”

Goebbels also wrote, “It is not propaganda’s task to be intelligent, its task is to lead to success.”

Source: wikipedia

Think of the left’s mindless slogans; some of it crap from the 60s like “hey, hey, ho, ho...cause du jour has to go.” And then of course their recent mindless little rhyme, “Bush lied, people died.”