Short explanation: the music industry has discovered that capturing the teenage market pays dividends and teenagers are emotional.<p>Unrelated anecdote with a different explanation:<p>I had a fascinating conversation with my parents recently. They are both children of the 60s and grew up in San Francisco. We often share music just to talk about it. I was playing some heavier (dubsteppy-metal) music to them, and wanted to dig into why they didn't like it.<p>The reason that I like heavy music (especially at shows) is because it is very rare that I get to cut my rage loose, and let it flow. Mosh pits are the only place I can think of where this is an acceptable form of self expression. This feeling is sometimes a good gateway to making me feel like I can win (aka, be alright) when I'm feeling down.<p>I asked them if what I just described, and the feelings that the music engendered made intuitive emotional sense to them. Regardless of whether they agree that it's positive or negative, does that emotional drive resonate with them. And the answer was, shockingly to me, "No".<p>Through our conversation, we settled on a convenient narrative (with absolutely no research or sources to back it).<p>In the 60s and 70s, the rebellion was not against the machine, it was for betterment. They saw the moon landings, and went to concerts in Golden Gate Park that sang about love and freedom for all, and they said that there was a feeling that anything was possible. You just had to do it. And there were lots of problems, but we made progress, it just took doing.<p>While there is likely some rose-tinted-ness about this recollection, I found it interesting that this was not the way I grew up seeing the world. I grew up with the narrative that everything was wrong, everyone was wrong, and so fuck everything - tear it down.<p>A short list:<p>Rage Against the Machine<p>Eminem<p>System of a Down<p>Our convenient narrative was that when our leaders act in bad faith, the result is generations of damage (i.e. the Vietnam war), and that this is reflected in culture. Interestingly, this polarizes both ways politically. So you get a feedback loop of culture becoming more extreme to differentiate itself while serving a polarizing society.<p>Aside: I'm so happy to see charts with error bars!