The Knew in 1912
This cartoon from 1912 shows that at least some people foresaw the havoc the Federal Reserve system would cause throughout the U.S. economy. (The Federal Reserve was signed into law in 1913.) Occupy Wall Street, take notice.
Interesting side note: Charles Lindbergh Sr., father of the famed aviator, was one of the greatest opponents of the 1913 Federal Reserve Act that Woodrow Wilson signed into law.