The crash of 1929 came after a decade of interventionist politics following world War I. "Free markets" were blamed anyway. Decades later, we pursue even more interventionism, and when it fails, we blame "free markets" all over again.
Ron Paul's message of peace is a critical component in limiting the power of the state. Unfortunately, few ever question the branch of the state known as "the military" and assume that militarism and empire can be compatible with a free society.