What was the Bonus Army of the Great Depression and what was it's effect on president Hoover's public support?

They were WWI army veterans. They had a bonus coming to them years down the road but they wanted early (a bill to pay them early ped in the house and failed in the Senate) due to the depression, so they marched on Washington. Hoover refused to meet them, so they camped out in D.C. Hoover sent in the Army to disperse them, led by Douglas MacArthur (Eisenhower and Patton were also present) and the army did so violently, using tear gas and burning out the encampment. Many Bonus Marchers were seriously injured and one infant died from tear gas exposure (the Marchers had brought their families along). These heavy-handed tactics furthered the image of Hoover as uncaring in the face of a serious economic crisis (not entirely true and Hoover was furious about what had happened and thought that MacArthur had screwed up). The next year, with a new President (FDR) the marchers returned and FDR welcomed them and gave them coffee.