Never underestimate the power of stupid people in large numbers.
Yep, like this:
“MEMOIRS OF EXTRAORDINARY POPULAR DELUSIONS AND THE Madness of Crowds” by By CHARLES MACKAY, LL.D.
Volume 1
http://www.gutenberg.org/files/24518/24518-h/dvi.html
Volume 2
http://www.gutenberg.org/files/24518/24518-h/dvii.html