[Avodah] Sinas Chinam - Netziv's understanding

[Daniel Eidensohn]

The Netziv has a well known position that the sinas chinom of the Second 
Temple was the assumption that anybody who either sinned or had a 
different understanding of halacha/hashgofa was labeled as a tzadoki and 
sentenced to death. Thus this intolerance was  religiously motivated and 
difficult to combat. He states this several places in his commentary to 
chumash as well in a teshuva.

My problem is I have not found anybody else who has such an 
understanding. Would appreciate any citations expressing a similar view 
or anyone who expresses approval of this interpretation. I was told that 
R' Moshe Shmuel Shapiro expressed agreement with the view but I have 
nothing in writing.

Daniel Eidensohn