>>24603505
>regarding what is the real head of church, Rome or Istanbul (lol).
The head of Orthodox church is Christ. The Orthodox view Catholicism as an offshoot of Christianity, and Protestantism as a later offshoot of Catholicism. There isn't much animosity towards them nowadays since non-Orthodox denominations are rare in Russia and everybody understands that there are more pressing problems right now.

>what's the public's opinion on the movie "4" where Shnurov is depicted as inmate
It's actually completely unknown in Russia. This stuff was made purely for export. Shnurov exists in public consciousness as a punk guy from Election Day, where he basically played himself.