Yes, there is widespread support for Putin and his war - but by this very reason, how can Russians who do not support Putin and his war can be held responsible for it? What do you expect this minority to do, exactly? You can't hold people responsible for not doing something if you can't even articulate what that something is is.

Your entire argument is premised on the notion that there's a coherent "them". But that is virtually never the case, even in popular dictatorships.