Answer:
The Bonus Expeditionary Force.
Explanation:
They were a group of 43,000 marchers, some of them veterans of World War I who gathered in Washington D.C. in 1932 to demand the payment of their service certificates.
The name was given by the organizers as a reference to the American Expeditionary Forces. The media called them Bonus Marchers. The manifestation was supposed to be in peace, but when the Washington police attempt to remove the veterans after being ordered to do that by the Attorney General they resist. That lead to Hoover´s decision of sending the army to clear the marchers' campsite. It was considered politically disastrous to Hoover and was a contributing factor to the victory of Roosevelt in the 1932 election.
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