“Once we were young and we were crass enough to care” hit me like a hammer when I first heard it. It pairs perfectly with the line from Once We Were Anarchists from his previous album;

Young enough to be all pissed off, old enough to be jaded

It’s very much the thoughts of a young man in flux, growing into adulthood and figuring out that it doesn’t matter how much you shout and scream, changing society is really fucking hard.