...is the ending of "The Warriors".
In the movie, that guitar chunk at the start is appropriately jarring.

I loved that movie. I wonder how it holds up, would I be able to sit through it now?

It was on The Movie Channel, I think.
It is a bit dated, but it's so allegorical that the period is less important.
I noticed that the guys that play Ganz & Luther in 48 Hours are both in The Warriors.

Of these days. I noticed it's on roku and plex.