"By seeing society in class terms we are programmed to find antagonism at the heart of all the institutions through which people have attempted to limit it. Nation, law, faith, tradition, sovereignty – these ideas by contrast denote things that unite us. It is in terms of them that we attempt to articulate the fundamental togetherness that mitigates social rivalries, whether of class, status or economic role."
Eh? This statement by Scruton is 
Completely obviously, faith is something that is very, very often used to divide people.
As are most of the other things on his "unite" list.
Faith can, of course, also be used to unite people. And... so can class.
Maybe there's some vital context missing here, but this quote just makes Scruton look like he's ignoring factual evidence of which he's perfectly aware, but which doesn't suit him.
I can't scroll up just now, but I think PP made comments along the lines of there being plenty of factors which unite us with other human beings, and these are worth pursuing rather than always seeking what divides us. I'd agree strongly with that.
But Scruton isn't saying that. He's merely trying to elevate his fave unifying factors and diss his bogeyman unifying factor.