Don’t think it was the raunchy China Girl one! Though that might be apt - can remember getting up to watch the uncensored version on Channel 4 as a teenager.
Bizarre. Trying various FGTH mixes and found a Fruitness Mix of Welcome to the Pleasuredome. Mrs AC immediately identified the narrator as the chap from Butterflies, I said ‘no way, Geofrey Palmer doesn’t sound like that’, how wrong I was!
I think the OP is thinking of the sequence that ends the film ‘The Mist’ which features a very powerful track called The Host of Seraphim by Dead Can Dance and a very post apocalyptic scene of decimation.
You can find it on Yotube if you do a search for ‘The Mist ending” or final scene.
I’ve just figured it out, I’ve seen the footage many times in TV programmes, there’s a brief snippet in a video which I regard as utterly sublime, addressing so many issues with quick flashes of relevant imagery:
Linkin Park -What I’ve Done
If you’ve never seen this, please, please take a look, there’s more sense in this than I’ve heard from politicians in decades: