Complex sentence: The song portrays the early years of Punk in a negative light, bemoaning the lack of followthrough on the part of early Punk leaders and the band members' own naivete, exhorting listeners to not make the same idealistic mistakes.
Split into simpler sentences: The song portrays the early years of the punk movement in a negative light, bemoaning the lack of followthrough by the leaders. It also comments on the band members' own naivete, exhorting listeners to not make the same idealistic mistakes.