Pelham D. Glassford was held responsible for the violence that came about as a result of what assemblage of marchers on Washington, D.C.?
Pelham D. Glassford:  He later served as Superintendent of the District of Columbia Police Department, and was in large measure held responsible for the violence that ended the 1932 Bonus Army protests. Bonus Army: Bonus Army was the popular name for an assemblage of some 43,000 marchers—17,000 U.S. World War I veterans, their families, and affiliated groups—who gathered in Washington, D.C. in the summer of 1932 to demand cash-payment redemption of their service certificates.
Bonus Army