slå noe i hartkorn med noe

Etymology
From, based on the historical taxation system based on grains whereby some cereals were approved whereas some weren't. The phrase alludes to some grains being considered equal to others when in reality they aren't.

Phrase

 * 1) To equate something with something with which it does not belong.
 * De andre demonstrantene var lite glade over å bli slått i hartkorn med den lille, voldelige gruppen av nynazister.
 * The other demonstrators were not very happy about being equated with the small but violent group of neo-Nazis.
 * 1)  Compare apples and oranges.