For 10 points, name this powdered substance created from ground wheat and used to make bread.
Garrison's Liberator compared the actions of a mob seeking this good to the burning of the abolitionist Lewis Tappan's house, while James Gordon Bennett denounced the "abominable extortions" of the "monopolists" hoarding this good.  At a rally to discuss the price of this good, Alexander Ming frequently digressed to denounce "the great fraud of paper money," as related in Fitzwilliam Byrdsall's history of a certain political faction.  Though Moses Jaques had earlier silenced a man who urged violent force, Mayor Cornelius Van Wyck Lawrence was pelted with brickbats while remonstrating with a crowd seeking this good; shortly thereafter, that crowd raided the warehouses of S.H. Herrick and Meech &amp; Co.  After hearing speeches by leaders of the (*) Locofocos, that crowd burst through the doors of Eli Hart's warehouse and stole hundreds of barrels of this good during an eponymous 1837 riot.  For 10 points, name this powdered substance created from ground wheat and used to make bread. 
Garrison's Liberator compared the actions of a mob seeking this good to the burning of the abolitionist Lewis Tappan's house, while James Gordon Bennett denounced the "abominable extortions" of the "monopolists" hoarding this good.  
flour (accept flour riots)