The United States government quietly reclassified nitrocellulose, a humble plastic with deflagrating1 explosive properties under certain conditions, as a high explosive (archived). For one hundred and fifty-four years nitrocellulose plastic has safely been used in the production of common household objects including guitar picks and table tennis balls.
The safe, deflagrating failure mode of nitrocellulose also makes it the ideal propellant for ammunition and uniquely useful as flash paper in the magician's trade. As a deflagrating "low explosive" the explosive failure moves as a flame front through nitrocellulose at a speed far below that of sound. By contrast in actual "high explosive" material instead of a slow moving flame front explosive failure occurs with detonation and a shock wave that moves faster than the speed of sound.
Due to the greater hazard and handling requirements associated this reclassification effectively amount to a ban on small arms ammunition though US government Blackshirts insist they will not be enforcing this ban at the present. Coverage of this, even in specialist media, is complicated by noise produced by ongoing masturbatory lobbying over the implications of this change for wetted, non-explosive nitrocellulose rendered safe for bulk transport. Before being used in viable ammunition wetted nitrocellulose must first be dried rendering the masturbatory noise moot for end users.
Commonly referred to as "low explosive" ↩