Below is a history lesson that, ideally, should be read by people like NYC Mayor Michael Bloomberg and L.A. OBSERVED business columnist Mark Lacter (both of which fulminated on the Occupy movement last week, throwing out the usual "dirty, intellectually incoherent, unrealistic hippies" stereotypes).
Wikipedia entry on the Bonus Army of World War One veterans who occupied Washington D.C. in 1932:
From the Wikipedia article:
Army Chief of Staff General Douglas MacArthur commanded the infantry and cavalry supported by six tanks. The Bonus Army marchers with their wives and children were driven out, and their shelters and belongings burned.
A second, smaller Bonus March in 1933 at the start of the Roosevelt Administration was defused with promises instead of military action. In 1936, Congress overrode President Franklin D. Roosevelt's veto to pay the veterans their bonus years early.