I don't know the details here but just throwing this out; activists in Sweden managed to do a lot of damage to neo-nazi groups by attacking their finances. App

I don't know the details here but just throwing this out; activists in Sweden managed to do a lot of damage to neo-nazi groups by attacking their finances. Apparently there were discrepancies that the tax office needed to know, and also the services used to gather tithe from their members did not want to be associated with neo-nazis.