parade of horribles

noun2

1. •
   A parade featuring a progression of people wearing comic and grotesque costumes, commonly accompanied by floats and models representing monsters.
2. •
   Any rhetorical device presenting a series of terrible results that notionally might follow from an act, instead of confining the argument to the explicit terms of any applicable law.

   • The majority trotted out a parade of horribles in which judicial line-drawing concerning accommodation would displace legitimate democratic choices. — 1992