It once was the canonical X in "we banned X why haven't we banned Y" (where Y is something like "assault rifles" or "peanuts") but perhaps only for people of a

It once was the canonical X in "we banned X why haven't we banned Y" (where Y is something like "assault rifles" or "peanuts") but perhaps only for people of a certain age. A more recent example: the Boeing 737 MAX was grounded after two accidents out of a few hundred thousand flights.