I'm guessing there's a lot you've missed.
Being the father of four teenaged kids (now in their '20s), I have the
advantage of being exposed to the rebirth of punk first-hand (well,
literally second-hand, I guess). You might want to take a look at this:
http://en.wikipedia.org/wiki/Punk_rock
And living in the DC area, I was particularly tuned into the following:
"In its original, mid-1980s incarnation, emo [punk] was a less musically
restrictive style of punk developed by participants in the Washington,
D.C. area hardcore scene. It was originally referred to as "emocore", an
abbreviation of "emotive hardcore". Notable early emo bands included
Rites of Spring, Embrace, and One Last Wish. The term derived from the
tendency of some of these bands' members to become strongly emotional
during performances. Fugazi, formed out of the dissolution of Embrace,
inspired a second, much broader based wave of emo bands beginning in the
mid-1990s. Groups like San Diego's Antioch Arrow generated new, more
intense subgenres like screamo, while others developed a more melodic
style closer to indie rock. Bands such as Seattle's Sunny Day Real
Estate and Mesa, Arizona's Jimmy Eat World broke out of the underground,
attracting national attention. By the turn of the century, emo had
arguably surpassed hardcore, its parent genre, as the roots-level
standard for U.S. punk, though some music fans claim that typical
latter-day emo bands like Panic! At The Disco and Fall Out Boy don't
even qualify as punk at all."
It's not '70s punk at all, trust me. My oldest son now records and
produces bands, and the vast majority are emo-punk bands. Do I like it?
For the most part no, although there are some good bands here and there
in the genre. But it's an indication that punk as a whole has
progressed considerably, probably more so than most other genres.
