Explain the asthetics of Punk

Here's a fascinating essay describing the Sex Pistols performance at San Francisco's Winterland, January 1978:
As an old fashioned "peace-love/classic rock" lover, this episode of music completely eludes me. Didn't The Who catch the same vibe but with a lot more musical skill and integrity? Nonetheless, the essay gives a good snap shot surrounding the Sex Pistols and a glimpse into the punk musical phenomenom. If punk had been a satire, it'd be hailed a triumphant post-modern concept piece. The fact it is "real" is even more amazing to me. Excuse me, I have to put on a Judy Collins records to feel "clean again". LOL.
In tenth grade(1979), some friends at my new high school took me to a concert at a small club in Hermosa Beach, CA called The Sweetwater. The show blew open the doors of my perception about how rock & roll should be. Big stadium rock couldn't hold a candle to the intensity.

It was Black Flag, and nothing was ever the same, for me.
I got one word for you, the "Monks"

I got one word for you, the "Monks"
Now that's some fun sh#t. If that's Punk I need to buy some.

Earlier in the thread someone mentioned Nirvana and Eminem, I like both and have most of their LPs.

I see the "angry" connection mentioned by several people, all I know is Kurt Cobain is equal parts Indy rock and soul (to me) and Marshall Mathers managed to get me to listen to RAP, something I claimed I would never get into.
Re: Anger and Punk

The Clash's Punk Declaration (from "Clampdown"):

"Let fury have the hour,
Anger can be power"

This sentiment may not be unique to punk music, but it is central to punk music.